Line #75 MilestoneCelebration/LiveActionTV


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5	[[quoteright:350:[[Franchise/PowerRangers https://static.tvtropes.org/pmwiki/pub/images/r_119.jpg]]]]
6	[[caption-width-right:350:20 years and they still have a power and force that you have never seen before.]]
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11
12	Examples of MilestoneCelebration in live-action TV.
13
14	Series that have their own subpages:
15	[[index]]
16	* ''MilestoneCelebration/DoctorWho''
17	[[/index]]
18	!!Series that don't:
19	* ''Series/BrooklynNineNine'' notably celebrated its ''99th'' episode rather than its 100th due to the show's title. The episode, titled "99" (which was also the 9th episode of the season) revolved around the squad trying to race back to Brooklyn from Los Angeles in order to get Captain Holt to an interview for NYPD police commissioner. It also featured the cast at Nakatomi Plaza (the setting of Jake Peralta's favorite film, ''Film/DieHard'') and revealed Rosa Diaz as bisexual and in a secret relationship with a woman.
20	* GameShows are no stranger to this trope.
21	** ''Series/WhatsMyLine'': To celebrate its 25th anniversary as a series in 1975, a special two-hour retrospective of the panel game, wherein four panelists sought to identify someone's occupation or other secret, aired on ABC Late Night. It was interesting in a number of respects when it aired in late May: 1. Virtually all of the footage (except for a clip introducing then-sitting President UsefulNotes/GeraldFord) came from the original 1950-1967 CBS run; 2. The special was hosted by original host John Daly (who was not present at all during the syndicated run), although Arlene Francis and co-creator Mark Goodson were there; and 3. The syndicated version, which had been airing since 1968, was about to wrap up its successful seven-year run. Still, it was a nice way to celebrate television's then-longest running game show, which was a constant presence for most of the past quarter century.
22	** ''Series/WheelOfFortune'': The 3,000th and 4,000th episodes were special retrospective episodes, featuring some of the key highlights of the (syndicated) series. The 3,000th program aired in 1998, and the 4,000th sometime in 2003. A rare photograph, printed in Jefferson Graham's "The Game Show Book," showed Vanna and Pat at the puzzle board to promote the daytime series' 3,000th episode, aired sometime in the fall of 1986.
23	** ''Series/ThePriceIsRight'':
24	*** With the ceremonial 5,000th episode (in the spring of 1998), Studio 33 (where the show taped) was renamed the Bob Barker Studio. The 6,000th and 7,000th episodes have all featured increased prize budgets and other pomp and circumstance.
25	*** The show celebrated its 25th, 30th, and 35th Anniversaries with a primetime special. The first (#0001S) used the half-hour format, with the other half filled with clips; the second (#0001LV) was taped in Las Vegas, using the regular format; the third (#023SP) also celebrated Bob Barker's 50 years in television, with a similar format as the 25th-Anniversary Special and a cameo by Creator/AdamSandler.
26	*** During the first week of the 40th season, there was a 40th Anniversary Special, in which the audience consisted ''entirely'' of past contestants who were invited back to play again. One player, Paul Levine, who was the first player to play "Bonus Game" on the pilot episode, played that same game again, winning a restored 1972 Chevrolet Camaro, the same car he'd originally won in the pilot.
27	** ''Series/{{Jeopardy}}'':
28	*** The original version aired its 2,000th episode in early 1972. In place of Final Jeopardy! was a performance by Mel Brooks' 2000-Year-Old Man character. Various other special episodes and tournaments have cropped up during the course of the Trebek version.
29	*** For the Trebek version's 3,000th episode, the opening round featured the same categories used in Trebek's premiere (with new clues), Double Jeopardy! featured special categories worked around the milestone, and the Final Jeopardy! category was "Holidays", the same as the first episode.
30	*** For the Trebek version's 10th season, there was a Tenth Anniversary Tournament featuring players from each of the show's first 9 seasons, giving the season 9 slot to Tom Nosek, the then-newest Tournament of Champions winner). The tournament was won by season 6's Frank Spangenberg ([[SugarWiki/MomentOfAwesome after a major turnaround in the final games]]).
31	** ''Series/LetsMakeADeal'' celebrated being on air for 50 years in early 2013 by having Monty Hall himself and his assistant taking over for one of the deals.
32	* Creator/BobHope: Various shows marked one of his landmark anniversaries or birthdays, starting with "A Quarter Century of Bob Hope on Television" in October 1975. Birthday celebrations for his 75th, 80th and 90th birthdays aired in 1978, 1983 and 1993, respectively. Many of these shows featured [[ClipShow clips]] from previous specials, along with pre-taped well wishes from his friends, often the sitting president at the time and the casts of various TV shows.
33	* ''Series/AllInTheFamily'': The 100th and 200th episodes of the series were [[ClipShow Clip Shows]], but not in the traditional sense of wrapping a "recalling old times" storyline around past clips. Rather, these were special guest stars – Henry Fonda for the 100th show, in December 1974, and Norman Lear for the 200th show (from March 1979) – providing commentary, narrating clips and introducing interview excerpts from the main cast members. A 20th anniversary special also aired in 1991, featuring retrospectives from cast members and ordinary people who agreed to be interviewed for the special.
34	* ''Series/HappyDays'': The series' first "milestone" show came just two years into its run, titled – inventively enough – "Second Anniversary Show," and was simply Fonzie and the family laughing about past adventures. Two more "anniversary milestone" shows – titled "Third Anniversary Show" (Howard and Marion celebrating their anniversary) and "Fourth Anniversary Show" (Lori Beth writing a paper about the Cunninghams, an "average middle-class American family") – aired in 1977 and 1978, respectively.
35	* ''Series/LittleHouseOnThePrairie'': To celebrate its fifth anniversary as a series, NBC decided to celebrate one of its rare (at the time) series hits with a special three-hour movie, "The Little House Years." This was simply extended highlights from seven of the most popular episodes of the series framed around the Ingalls celebrating Thanksgiving dinner. Although shown independently of the series, and not usually shown in syndication order with the rest of the episodes, it is canon within the TV ''Little House'' universe. [[note]]In addition to drawing great ratings, "The Little House Years" was an effective plug for the newly syndicated ''Little House''.[[/note]]
36	* ''Series/TheTonightShow'': To celebrate Johnny Carson's 10th anniversary of hosting the show, a prime-time special aired, including highlights from his first decade of the show and special guests. Clips were rather limited due to much of the archives being wiped (due to reuse of videotape), although kineoscopes and video of highlights from the 1960s through early 1970s (e.g., Ed Ames' tomahawk throw, a parody of ''Franchise/{{Dragnet}}'', Tiny Tim's wedding) were shown. After then, the specials began airing annually (e.g., "Tonight Show Starring Johnny Carson 17th Anniversary Special" in 1979) until the last one aired in 1991. As the years progressed, more clips were aired since all shows produced after sometime in 1972 exist.
37	* ''Franchise/StarTrek'':
38	** The franchise celebrated 30 years with ''Series/StarTrekDeepSpaceNine'' and ''Series/StarTrekVoyager'' doing special episodes that referred back to the original crew. ''Deep Space Nine'' did a revised look at the events of the ''Series/StarTrekTheOriginalSeries'' episode "[[Recap/StarTrekS2E15TheTroubleWithTribbles The Trouble With Tribbles]]" via TimeTravel, and ''Voyager'' also did a TheGreatestStoryNeverTold with what Captain Sulu did during the majority of the events of ''Film/StarTrekVITheUndiscoveredCountry''. The reason why ''Voyager'' had one featuring Sulu was that "The Trouble With Tribbles" was one of several Season 2 episodes to not feature Sulu (thanks to Creator/GeorgeTakei filming ''Film/TheGreenBerets'') and it just seemed strange to not include the character somehow in the 30th anniversary...
39	** ''Series/StarTrekVoyager'''s 100th episode, "[[Recap/StarTrekVoyagerS5E6Timeless Timeless]]", featured the destruction of Voyager with only two survivors from a botched attempt to return home. Harry and Chakotay used TimeTravel to SetRightWhatOnceWentWrong, which made them fugitives of Starfleet. Adding to the occasion was guest star Creator/LeVarBurton, who also directed the episode. The scene where the crew christened their new slipstream drive doubled as a party for this episode's milestone.
40	** ''Series/StarTrekTheNextGeneration'':
41	*** The series' 80th episode produced, "[[Recap/StarTrekTheNextGenerationS4E6Legacy Legacy]]", surpassed TOS' total of 79[[note]]though that is based on counting TNG's PilotMovie as two episodes, which the production numbers for the series did; in addition, the TOS two-parter "The Menagerie" is considered a single episode for production purposes, since it incorporated nearly the entirety of the first, unaired pilot, "[[Recap/StarTrekS1E0TheCage The Cage]]", and the new footage was produced under the timeframe and budget of a single episode[[/note]] had the ''Enterprise'' be forced to bypass a scheduled stop at Camus II, the planet where "Turnabout Intruder", the TOS finale, took place.
42	*** The series' 100th episode, "[[Recap/StarTrekTheNextGenerationS4E26S5E1Redemption Redemption]]", was the fourth-season {{Cliffhanger}}. It was a key episode in Worf's arc, marked the beginning of a Klingon civil war, and ended on TheReveal of Romulan Commander Sela, [[WhamShot a dead ringer for the late Tasha Yar]][[note]]confirmed in the next episode as the daughter of the alternate Tasha from "Yesterday's Enterprise"; [[IdenticalGrandson both characters played by]] Creator/DeniseCrosby[[/note]].
43	*** TNG's fifth season, 1991-92, coincided with Star Trek's 25th anniversary. For this season, [[http://tng.trekcore.com/gallery/albums/openingcredits/s5/season5_048.jpg the show's logo had rear shadows]]. The two-part episode "Unification", airing in November 1991 and featuring Creator/LeonardNimoy as Spock, was created in conjunction with ''Film/StarTrekVITheUndiscoveredCountry'' (and Spock even references the events of the film) as part of ''Star Trek'''s 25th anniversary. The episodes were also dedicated to Creator/GeneRoddenberry, who passed away during their production.
44	** The teaser trailer for ''Series/StarTrekPicard'' was released on May 23, 2019, which was the 25th anniversary of ''Series/StarTrekTheNextGeneration'''s GrandFinale, "[[Recap/StarTrekTheNextGenerationS7E24AllGoodThings All Good Things...]]"
45	* ''Series/BuffyTheVampireSlayer'':
46	** The 100th episode coincided with the fifth-season finale, in which Buffy dies (for the second time). "[[Recap/BuffyTheVampireSlayerS5E22TheGift The Gift]]" additionally was the last Buffy episode to air on The WB network before the series moved to UPN in September 2001. Further, the episode began with a PreviouslyOn segment that contained clips from ''every single previous episode'', all going by at very high speed.
47	** The canon Season 8 comics that continued the story were coincidentally released on the 10th anniversary of the first season.
48	* In ''Series/{{Angel}}'s'' 100th episode, "[[Recap/AngelS05E12YoureWelcome You're Welcome]]", Cordelia awoke from her mystical coma and reinvigorated Angel's fighter spirit. [[spoiler:And it was [[DeadAllAlong revealed]] that she [[BackForTheDead had died]].]]
49	* ''Franchise/PowerRangers'':
50	** 10-year anniversary: "Forever Red" in ''Series/PowerRangersWildForce''. 10 years of Red Rangers returned for a fight against TheRemnant of [[Series/PowerRangersZeo the Machine Empire.]]
51	** 500th episode - "Legacy of Power" in ''Series/PowerRangersDinoThunder'', a big ClipShow showcasing most of the series. It also moved the story forward a bit, as the Dino Rangers finally found out that their teacher and mentor, Tommy Oliver, was a veteran Power Ranger (the [[Series/MightyMorphinPowerRangers very first]] SixthRanger, and Red Ranger to the [[Series/PowerRangersZeo following]] [[Series/PowerRangersTurbo couple]] teams). The very next episode saw Tommy climb back in the saddle as the Black Dino Ranger.
52	** 15-year anniversary: "Once A Ranger" in ''Series/PowerRangersOperationOverdrive'', a two-parter which had some of the more popular (non-Red) Rangers return for another fight. Meanwhile, the video game ''VideoGame/PowerRangersSuperLegends'' pitted a number of historical Rangers against old enemies.
53	** In a bit of fortuitous timing, the final Disney season before Saban claimed the franchise back, ''Series/PowerRangersRPM'', ends with the 700th total episode.
54	** ''Series/PowerRangersMegaforce'' celebrates the show's 20th anniversary. It's running two years; the first year is a bit of a homage to the original ''Series/MightyMorphinPowerRangers'' and the second is a franchise-wide CrisisCrossover. (The two-year thing is due to scheduling quirks on the part of both Creator/{{Disney}}[[note]]who skipped a year when they had the series[[/note]] and Creator/{{Nickelodeon}}[[note]]who cut episode counts per season in half, forcing each incarnation to stretch over two years[[/note]]; the adaptation of ''Sentai''[='=]s milestone crossover season was going to miss the anniversary year, so it and the prior year was made one big storyline.)
55	** 25-season anniversary: "Dimensions in Danger" in ''Series/PowerRangersNinjaSteel'', another big ReunionShow involving TheMultiverse and Rangers from across the entire franchise. In the Creator/BoomStudios [[ComicBook/MightyMorphinPowerRangersBoomStudios series of comics]] running at the same time, the anniversary was commemorated with the massive crossover event ''[[ComicBook/MightyMorphinPowerRangersShatteredGrid Shattered Grid]]''.
56	** Several events for the 30th anniversary in 2023:
57	*** ''Film/MightyMorphinPowerRangersOnceAndAlways'' is a [[ReunionShow Reunion Special]] where most of the cast from the original three seasons of ''MMPR'' return to face off against a [[ReturningBigBad resurrected Rita Repulsa]].
58	*** ''Series/PowerRangersCosmicFury'' features Lord Zedd as the ReturningBigBad and pits him against the heroes from ''Series/PowerRangersDinoFury''. The original Blue Ranger returns in a mentor role, and a handful of supporting characters from the three most recent seasons -- ''Dino Charge'', ''Ninja Steel'', and ''Beast Morphers'' -- make guest appearances. ''Cosmic'' is also intended to be an EndOfAnAge for the ''Power Rangers'' TV show; after 30 years of the same SharedUniverse, Hasbro intends to clear the deck with a reboot when it returns. To further drive this point home, the last episode of the season is simply titled "The End".
59	*** As part of the 30th anniversary celebrations, Creator/BoomStudios, the current holders of the ''Power Rangers'' [[ComicBook/MightyMorphinPowerRangersBoomStudios comics license]], ran a Kickstarter campaign for deluxe hardcovers collecting all the comics from the previous holders of the license, along with one collecting Boom!'s standalone graphic novels. Among the successful stretch goals was a new ''Power Rangers'' comic series written by Creator/AmyJoJohnson (the original Pink Ranger) and her partner, director Matt Hotson.
60	* ''Series/SesameStreet'':
61	** The first special, "A Walking Tour of Sesame Street," aired in the spring of 1979 to observe the show's 10th year. This was the first ClipShow, as Big Bird, Oscar the Grouch and Barkley the dog; human cast members Will Lee, Bob [=McGrath=], Linda Bove and Alania Reed; and SpecialGuest James Earl Jones all talked about the show, its impact and top storylines up to that point in the series' history.
62	** "Sesame Street: 20 and Still Counting" came in 1989 and aired on NBC. Hosted by Bill Cosby, the show's main human cast and Muppet characters all appeared, as did Kermit the Frog (whose appearances by now were increasingly rare). The two top storylines from the 1980s – the passing of Mr. Hooper and Snuffleupagus' revelation to the adults that he was indeed real – were also recounted, and the top original song from the show, "Sing" (composed by Joe Raposo, and made a worldwide hit by The Carpenters) was also included.
63	** "Sesame Steet Unpaved" was a documentary airing in 1999 and celebrating the show's 30th anniversary. Extended clips of notable storylines – the WelcomeEpisode where Gordon shows a young girl around the Street, Mr. Hooper's death, and the "Snuffy is real" episodes among them – are shown.
64	** "Sesame Street's 50th Anniversary Celebration," focusing on the show's cultural impact. Many of the longtime cast members joined their current stars, and Muppets that hadn't appeared for years were featured as the show celebrated its worldwide impact. The special marked the last appearance of Caroll Spinney, the longtime voice and Muppet performer behind Big Bird and Oscar, as he died less than a month after the special aired on HBO and PBS.
65	*** Not so much connected with the 50th anniversary milestone, but in December 2019 the ''Sesame Street'' became the first TV series to earn a Kennedy Center Honor (for its cultural and educational impact on America).
66	** Many other direct-to-video produtions, books and much more also helped observe these milestones.
67	* ''Franchise/SuperSentai'': Today, the franchise is recognised as having started with ''Series/HimitsuSentaiGoranger'' (1975-77), followed by ''Series/JAKQDengekitai'' (1977-80), the latter of which was CutShort. It was the third series, ''Series/BattleFeverJ'' (1979-80), which started the run which lasts to this day, introduced the HumongousMecha which put the "Super" into Sentai and, unlike the first two series, proceeded without involvement from creator Creator/ShotaroIshinomori. As a result, it took some time for the first two series to be acknowledged. Generally, Sentai anniversaries go by series (a year following the true anniversary) rather than years.
68	** The first milestone to be acknowledged officially was the 10th anniversary during then-tenth show ''Series/ChoujuuSentaiLiveman'' (1988-89). The anniversary logo featured the PowerTrio of ''Liveman'' accompanied by the past 9 Red Rangers.
69	** ''Series/KousokuSentaiTurboranger'' (1989-90) was launched as the then-eleventh show (tenth anniversary) of ''Super Sentai''. Its first episode was a special ClipShow that summarized the previous ten shows and featured 53 ''Sentai'' heroes in costume (which seems a modest number nowadays, when the first episode of ''Gokaiger'' had almost four times that amount). Interestingly, Toei decided to add [[Series/HimitsuSentaiGoranger two]] [[Series/JAKQDengekitai previous]] shows into the canon later on, making the Turboranger officially the thirteenth. The only reason they weren't included before was they lacked the HumongousMecha.
70	** The 15th anniversary was acknowledged with a commemorative logo during the run of then-fifteen show ''Series/GoseiSentaiDairanger'' (1993-1994).
71	** The 20th anniversary was celebrated only two years later, due to ''Goranger'' and ''J.A.K.Q.'' being incorporated into the franchise. ''Series/ChourikiSentaiOhranger'' (1995-96) had a team with the same colors as ''Goranger'', were part of a military organization, and brought back Hiroshi Miyauchi, star of both ''Goranger'' and ''J.A.K.Q.'' as a new character whom functioned as TheMentor. The anniversary was highlighted in the trailer for ''[[Film/ChourikiSentaiOhrangerTheMovie Ohranger The Movie]]'', coming with a commemorative logo.
72	** 25th series: a team-up movie featuring the ''Series/HyakujuuSentaiGaoranger'' (2001-02) teaming with five Super Sentai members from [[Series/JAKQDengekitai pa]][[Series/ChoujuuSentaiLiveman st]] [[Series/DenjiSentaiMegaranger se]][[Series/SeijuuSentaiGingaman ri]][[Series/RescueSentaiGoGoFive es]]. The movie ends with ''every'' previous Red Ranger showing up, albeit in costume only.
73	** 30th series: ''Series/GoGoSentaiBoukenger'' (2006-07) with the after-show segment "The 30 Sentai Encyclopedia", short skits hosted by the Boukengers briefly reviewing every show and every first over the past 30 years, as well as shared themes between shows. There was also the {{Crossover}} ReunionShow, featuring the physical manifestation of the 30 Years of Sentai in [=AkaRed=], who had the power of all the past Red Rangers combined, along with a Ranger from the [[Series/NinpuuSentaiHurricaneger previous]] [[Series/BakuryuuSentaiAbaranger four]] [[Series/TokusouSentaiDekaranger Sentai]] [[Series/MahouSentaiMagiranger series]], AND a villain from [[Series/HyakujuuSentaiGaoranger the one before those.]] More subtly, every MonsterOfTheWeek design in the series is an homage in aesthetical terms to a past ''Sentai'' HumongousMecha.
74	** On a smaller note, the 15th [[ReunionShow reunion movie]], ''Series/EngineSentaiGoOnger vs. [[Series/JukenSentaiGekiranger Gekiranger]]'' (2009), saw a theatrical release instead of being DirectToVideo for being number 15. This is acknowledged in the movie's ending when the heroes celebrate a birthday party, and calling it "a Super Sentai birthday". Afterwards, theatrical releases for reunion movies became the norm.
75	** 35th series: ''Series/KaizokuSentaiGokaiger'' (2011-12), the Sentai equivalent of ''Series/KamenRiderDecade'', with the heroes channeling powers and mecha of previous Ranger teams. Previous Rangers themselves also make guest appearances. In a nod to the previous anniversary, [=AkaRed=] was the one who gave them their powers. They also had [[Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie a crossover movie]] with one of Toei's other heroes, Series/SpaceSheriffGavan, who himself was celebrating his 30th anniversary. And shortly after ''Gokaiger'' ended, Toei launched the ''Superhero Taisen'' series that crossed ''Sentai'' over with ''Franchise/KamenRider'', with Gokaigers vs. Decade as the plot of [[Film/KamenRiderXSuperSentaiSuperheroTaisen the first film]] (Toei [[http://www.jefusion.com/2011/12/kamen-rider-vs-super-sentai-super-hero.html denies that it's an intentional Milestone Celebration]], but with the timing and characters involved it fits too well to not be one).
76	** In 2015, ''Series/ShurikenSentaiNinninger'' (2015-16) celebrated 40 years since the debut of ''Super Sentai'' with ''Series/HimitsuSentaiGoranger'' in 1975 by having the two Red Rangers of the past ninja series, ''Series/NinjaSentaiKakuranger'' and ''Series/NinpuuSentaiHurricaneger'', guest star in Episode 7; plus an additional cameo by Akaranger from ''Goranger''. The episode was supposed to air on April 5, exactly 40 years to the day of the premiere of ''Goranger'', but due to the show's entire schedule being delayed by one week because of preemption regarding the death of a Japanese journalist at the hands of ISIS, it became a belated birthday celebration on April 12; nevertheless, Episode 6, which aired on the anniversary date because of it, still acknowledged the milestone by beginning the OnTheNext preview with a photocollage of all 39 teams up to that point.
77	** While ''Ninninger'' celebrated the 40th ''year'' of the franchise, ''Series/DoubutsuSentaiZyuohger'' (2016-17) was the 40th ''installment''; and the franchise also hit 2,000 total episodes that season. The show celebrated both by bringing back the Gokaigers for episodes 1,999 and 2,000, where ''Zyuohger''[='s=] Red Ranger gained his SuperMode. The DVD releases also included special {{Bonus Episode}}s featuring [=AkaRed=] returning once again to teach the Zyuohgers about ''Sentai'' history.
78	** 45th series: ''Series/KikaiSentaiZenkaiger'' (2021-22) has the heroes channeling powers of previous Ranger teams albeit less directly than ''Gokaiger'', and is set on BreakingOldTrends - in this series, four of the Rangers are robots and their "Ranger" forms are mecha-like (and directly modeled on previous mecha) instead of the regular spandex suits, and they grow in size to become their ''own'' HumongousMecha. Also like ''Gokaiger'', ''Zenkaiger'' had [[Film/KamenRiderSaberPlusKikaiSentaiZenkaigerSuperHeroSenki its own crossover film]] with ''Series/KamenRiderSaber'' celebrating both franchises' shared anniversary.
79	** A handful of specific series have received DirectToVideo epilogue movies to celebrate their anniversaries, including ''[[Series/NinpuuSentaiHurricaneger Hurricaneger]]: 10 Years After'' and ''Hurricaneger Degozaru! Shushutto 20th Anniversary'', ''[[Series/BakuryuuSentaiAbaranger Abaranger]] 20th: The Unforgivable Rampage'', ''[[Series/TokusouSentaiDekaranger Dekaranger]]: 10 Years After'' and ''Dekaranger 20th: Fireball Booster'', ''[[Series/EngineSentaiGoOnger Go-Onger]]: 10 Years Grand Prix'', and ''Ten [[Series/KaizokuSentaiGokaiger Gokaiger]]''. ''Series/ZyudenSentaiKyoryuger'' also celebrated its personal 10th anniversary by crossing over with the then-current show, ''Series/OhsamaSentaiKingOhger''.
80	* As noted under ''Super Sentai'', the 30th anniversary of the ''Series/MetalHeroes'' franchise was celebrated with its first hero, Series/SpaceSheriffGavan, returning in a ''Gokaiger'' movie. This was followed by a standalone film, ''Film/SpaceSheriffGavanTheMovie'', that was intended to start a {{revival}} for the franchise by [[LegacyCharacter introducing a new Gavan]], but it bombed.
81	* ''Franchise/KamenRider'', in chronological order:
82	** ''Film/KamenRiderZX'' (1984), the tenth hero to bear the Rider moniker, is a low-key version. He was first advertised in a ''year-long'' promotion campaign across several mediums before finally debuting in a TV Special.
83	** The {{deconstruction}} film ''Film/ShinKamenRiderPrologue'' was made for the 20th anniversary of the franchise. it was released on 1992, one year off the actual anniversary of 1991. This was followed by a film with an unrelated story ''Film/KamenRiderZO'', released in 1993, which too was intended as a 20th anniversary production, with the title ''ZO'' chosen to resemble the number 20.
84	** {{Averted}} by ''Series/KamenRiderAgito'' (2001): the only thing marking the show as the 30th anniversary of the franchise is a disclaimer opening the first episode. Then again, the franchise was just [[Series/KamenRiderKuuga fresh off a]] {{revival}} at the time; survival was a more pressing matter back then. However, ''Agito'' did introduce traditions that would stick for all the following years, including multiple Riders as the norm and the utter lack of ending credits.
85	** ''Series/KamenRiderKabuto'' (2006) had a few smaller things to celebrate the ''Kamen Rider'' franchise's 35th anniversary, including the return of blatantly insect-themed suits and after-show review segments for episode 23 to 27.
86	** ''Series/KamenRiderDecade'' (2009), a year-long celebration of 10 years of the franchise's Heisei era in the form of a CrisisCrossover (a crisis which, oddly enough, eventually expands to celebrate the franchise's 38-year history by the end).
87	** ''Series/KamenRiderOOO'' (2010-'''2011''') and ''Series/KamenRiderFourze'' ('''2011'''-2012) collectively celebrate the franchise's 40th anniversary.
88	*** The ''Let's Go Kamen Riders'' movie features OOO along with [[Series/KamenRider the original two Kamen Riders]] and [[CashCowFranchise Cash Cow Sub-Franchise]] ''Series/KamenRiderDenO''. The rest of the Riders make cameos as BigDamnHeroes during the final fight, too. The film also doubles as a celebration of the Toei Company's 60th year, which it marks with [[spoiler:a special cameo scene where four of Creator/ShotaroIshinomori's non-''Kamen Rider'' {{toku}} heroes intercepting and quickly killing off a retreating [[Series/KamenRiderStronger General Shadow]]]]. Furthermore, episodes 27 and 28 of ''OOO'' happen to be the 999th and 1,000th episodes of the franchise as a whole, and feature the ''OOO'' characters breaking the Fourth Wall to film their own movie adaptation of the original ''Kamen Rider'' while a villainous {{Mook\|s}} from that series attempts to restore his old organization Shocker to its former glory. Plus both episodes featured cameos from prior actors that had the kanji "千" ("chi", meaning "thousand") [[PunnyNames in their names]].
89	*** ''Fourze'' is named for "40", in-universe for the 40 Astro Switches he can use but obviously also for 40 years (in addition to continuing the previous years' NumerologicalMotif [Decade was 1, Double was 2, OOO was 3]). It also mentions UrbanLegends about previous Riders, and uses ThemeNaming that references classic Riders. Plus the traditional crossover-with-the-previous-Rider movie was expanded from just OOO and Fourze to include the first seven Riders and OOO's predecessor ''Series/KamenRiderDouble''. The ''Superhero Taisen'' crossovers with ''Super Sentai'' also launched [[Film/KamenRiderXSuperSentaiSuperheroTaisen their debut movie]] during ''Fourze'''s run. And on top of all that, a series of joint anniversary crossover shorts with the 20th anniversary of the ''Anime/CrayonShinChan'' anime.
90	** As the 15th Heisei-era series, ''Series/KamenRiderGaim'' (2013-2014) included several events uniting the fifteen Heisei Riders. First, Gaim made his [[EarlyBirdCameo debut appearance]] in the [[PostScriptSeason post-script two-parter]] of the previous season, ''Series/KamenRiderWizard'', that featured the fifteen Riders together. Then the ''Wizard''/''Gaim'' movie had them sucked into an AlternateUniverse where counterparts of the Heisei Riders fought for dominance. And after that, the annual ''Superhero Taisen'' crossover became ''[[Film/HeiseiRiderVsShowaRiderKamenRiderWarsFeaturingSuperSentai Kamen Rider Taisen]]'', pitting the fifteen Heisei Riders against the fifteen original Showa-era Riders (and [[DemotedToExtra Demoting Sentai to Extras]]). As for the show itself, the execs took the opportunity to shake up the formula that had been in place since the ''Decade'' anniversary ended; going as far as hiring Creator/GenUrobuchi as lead writer and letting him go full " Uro[[AnyoneCanDie butcher]]" on his scripts for the express purpose of breaking down the image of the franchise as people knew it.
91	** 2016 celebrated the 45th Anniversary with ''Film/KamenRider1 the Movie'' (in place of the ''Superhero Taisen'' series), starring the [[Series/KamenRider original Kamen Rider]] and having him team up with the then-current show, ''Series/KamenRiderGhost''. Afterwards Creator/HiroshiFujioka stated he would be retiring from the role, also making it the final appearance of Takeshi Hongo (though he did later make a cameo for the 50th).
92	** The 2018-19 season, ''Series/KamenRiderZiO'', is not only the 20th Heisei season, but the ''last'' Heisei season due to Emperor Akihito abdicating the throne and ending Japan's Heisei era. As a result, ''Zi-O'' is a CrisisCrossover similar to ''Decade'' involving all 20 Heisei shows as the era's GrandFinale. The series also followed in ''Gokaiger''[='s=] footsteps by getting actors from all the other Heisei seasons for {{Continuity Cameo}}s, managing to get 11 of the 19 main Riders to appear in person,[[note]]''Fourze'''s Souta Fukushi couldn't appear in the flesh because he was tied up filming ''Film/{{Bleach}}'', but he was able to record voiceovers that were used along with a FakeShemp dressed in Gentaro's costumes[[/note]] some of them for the first time in years.
93	** The 50th Anniversary is celebrated in 2021, and like with the 40th the celebration spans two series:
94	*** ''Series/KamenRiderSaber'' crossed over with the concurrent ''Franchise/SuperSentai'' series, ''Series/KikaiSentaiZenkaiger'', in the film ''[[Film/KamenRiderSaberPlusKikaiSentaiZenkaigerSuperHeroSenki Super Hero Senki]]'' in order to celebrate both series' anniversaries. ''Saber''[='s=] toyline also had a few extra items and features tying into the franchise's legacy (for instance, the SuperMode TransformationTrinket toy had special "50th anniversary" voice clips).
95	*** ''Series/KamenRiderRevice'' first debuted with a preview episode accompanying the aforementioned ''Super Hero Senki'' movie, and later teamed up with Saber in ''Kamen Rider Beyond Generations'' where they interacted with both [[Series/KamenRider the original Rider]] from 50 years in the past and a CanonForeigner Rider from 50 in the future. The series itself is based around the DealWithTheDevil, as a way of taking the franchise's PhlebotinumRebel themes to a logical conclusion. Visually, ''Revice'' incorporates the number 50 as a design element in things like the heroes' armor and gear, and their alternate forms are also designed as homages to previous Riders, justified by their techie who made the gear being an in-universe fan (though unlike ''Decade'' and ''Zi-O'', this only involves visual references and not flat-out PowerCopying).
96	*** Toei also announced various special projects in the works during an anniversary press conference: ''Manga/FuutoPI'' (an anime adaptation of ''Series/KamenRiderDouble''[='s=] sequel manga), ''Series/KamenRiderBlackSun'' (a remake of ''Series/KamenRiderBLACK''), and ''Film/ShinKamenRider2023'' (a ''Franchise/ShinJapanHeroesUniverse'' movie remake of [[Series/KamenRider the original series]]). In addition, they gradually uploaded the first two episodes of every ''Rider'' series, plus a few of the tie-in movies, to [=YouTube=] with subtitles for international audiences.
97	** As with ''Super Sentai'', there are also a couple of instances of specific series celebrating their own anniversaries with movies, ''Series/KamenRiderOOO 10th: Core Medal of Resurrection'' and ''Series/KamenRider555 20th: Paradise Regained''.
98	* The Japanese ''Series/IronChef'' had a 2000th plate special commemorating the number of dishes that had been served on the show. Chef Joel Robuchon was a special guest judge, and the Chairman Kaga chose his five favorite and three least favorite dishes to have been served on the show. [[spoiler:It's also notably the ''only'' time Kaga himself voted, in order to break a tie.]]
99	* ''Series/StargateSG1'' had "Wormhole X-Treme" as its 100 episode, and another metahumor episode for the 200th episode. Part of the plot of "200" is that Mitchell is about to take his 200th trip through a stargate. This allows them to get away with saying things like "This is gonna be huge. The big 2-0-0!" within the episode itself.
100	* ''Series/{{Friends}}'' episode "The One Hundredth": Phoebe gives birth to the triplets.
101	* ''Series/{{Smallville}}'' featured the death of a main character in the 100th episode. In the 200th episode, Season 10's "Homecoming", [[spoiler:Clark lets go of his guilt over his father's death, which was the aforementioned main character death that happened a hundred episodes earlier. And, at the very end of the episode, [[LastGirlWins he and Lois]] share a dance, and, without either of them noticing, he begins to hover.]]
102	* ''Series/TheXFiles'' had a fake 100th episode; they claimed "[[Recap/TheXFilesS05E02ReduxII Redux II]]" to be the 100th episode in the promos but if you do the math, the episode is the 99th episode to air. Scully's cancer was cured in this episode and it also concluded a few other subplots as well. The actual 100th episode to be aired was a flashback episode that showed how the Lone Gunmen formed in 1989 and met Mulder and Scully was not in that episode. Their 200th episode, "[[Recap/TheXFilesS09E18SunshineDays Sunshine Days]]", was a MonsterOfTheWeek episode about a ''[[Series/TheBradyBunch Brady Bunch]]''-obsessed RealityWarper.
103	* Creator/StephenColbert did the 100th episode of ''Series/TheColbertReport'' in a tuxedo, and had the same guest as on the first episode (the first ever repeat guest). ''Series/TheDailyShow'' ran segments celebrating their '10 F#@king Years' anniversary every now and then for six months.
104	** The '10 F#@king Years' segments were made more hilarious by the collective cast acting as though they hadn't achieved something, but rather that they had just been through something terrible, and it wasn't over yet.
105	** The Fifth Anniversary Show was ''supposed'' to be a big deal with lots of correspondents weighing in, but everyone had something else to do at the last moment and sent apology videos (Stephen Colbert's was a VideoWill). Even the guest was on the other end of a satellite connection.
106	* ''Series/LawAndOrderSpecialVictimsUnit'':
107	** The 200th episode guest starred Creator/RobinWilliams. Come on, you know that was meant to be special (so to speak).
108	** Their 500th episode [[ExactlyWhatItSaysOnTheTin aptly titled]] "[[Recap/LawAndOrderSpecialVictimsUnitS23E6TheFiveHundredthEpisode The Five Hundredth Episode]]", in which former characters [[TheBusCameBack Amaro, Captain Cregen and Dr. Melinda Warner]] return and [[spoiler: it's also revealed the Perp of the Week Burton Lowe, a college student of Benson's late mother, had a relationship with Benson when she was 16]].
109	* The 100th ''Series/{{Scrubs}}'' episode was an elaborate parody of ''Film/TheWizardOfOz'', directed by Zach Braff.
110	* Referenced in ''Series/{{Monk}}'' with the CSI parody episode. The actual hundredth episode of ''Series/{{Monk}}'' features Monk's 100th case as a [[TheDocumentary documentary]]. [[spoiler:And then Monk ends up solving his 101st case inadvertently.]]
111	* ''Series/{{ER}}'':
112	** The 300th episode had the doctors betting on the number of patients they would have that night. The winner had a round 300.
113	** Its 100th episode had them host a woman who was born 100 years ago that day.
114	* ''Series/CSIMiami'' brushed with the Trope for their 100th, "Death Pool 100". The case just happens to involve counterfeit money, specifically $100 bills, but it's easy to miss. At the end of the episode, after most of the MontageOut, the core cast gathers on a beach casually talking about the case. The conversation ends by LeaningOnTheFourthWall:
115	-->'''Calliegh:''' Everyone thinks it's easy to make a hundred.\
116	'''Horatio:''' We know better.
117	* ''Series/{{Lost}}'s'' 100th episode, "The Variable", [[EpisodeCodeNumber which was actually #96]], hinted at TonightSomeoneDies in previews ([[spoiler:someone did, fan favorite eccentric scientist Dan Faraday]]), tied in advertising for ''Film/StarTrek2009'' as well as the show ''Flash Forward'', and aired immediately following UsefulNotes/BarackObama's 100th day address. As for the episode itself, it established the plan to alter the course of the series and prevent the crash of Oceanic 815. The occasion was also marked by a special ''Series/AceOfCakes'' with an awesome 100th episode cake.
118	* The 100th episode of ''Series/{{Frasier}}'' has the entire city of Seattle commemorating "Frasier Crane Day", to celebrate Frasier's 1,000th radio broadcast, and also has Niles and Frasier actually on-location and walking around Seattle.
119	* ''Series/{{Seinfeld}}'' had a clip show called ''The Highlights of 100''.
120	* In the 100th episode of ''Series/{{Charmed\|1998}}'', the [[HeelFaceRevolvingDoor constantly switching between good and evil]] character Cole Turner aka Belthazor was finally KilledOffForReal. In the 150th episode, the resident MrExposition Leo became human. The Avatars have something to do with both events.
121	* ''Series/That70sShow'':
122	** The 100th episode, "That '70s Musical", was a MusicalEpisode, with Fez imagining the cast covering some of the '70s hit songs.
123	** The 200th episode was the GrandFinale, which saw the protagonists celebrating the end of the decade.
124	* ''Franchise/UltraSeries''
125	** In 1973, Creator/TsuburayaProductions celebrated its 10th birthday with three new shows: ''Series/JumborgAce'', ''Series/{{Fireman}}'', and ''Series/UltramanTaro'', an AffectionateParody of their beloved franchise.
126	** On their 30th birthday (1993), Tsuburaya created the film ''Film/UltramanZearth'', another AffectionateParody of the franchise.
127	** For ''Series/{{Ultraman}}'''s 30th anniversary in 1996, Tsuburaya made ''Series/UltramanTiga'', marking the first full-fledged series after 15 years of short-lived foreign productions, movies, and the like. More specifically, the 49th episode "The Ultra Star" was the series' celebratory episode, featuring the protagonist travelling go to 1965 and meeting franchise creator Creator/EijiTsuburaya, as well as Tiga teaming up with the original Ultraman! The series ended up serving as a {{Revival}} for the franchise, bringing it back to TV for the next decade.
128	** The franchise's 35th anniversary was the 2001 ''Series/UltramanCosmos'' movie ''Film/UltramanCosmosTheFirstContact'' where Ultraman Cosmos battles against the original Ultraman's most famous enemy, [[InsectoidAliens Alien Baltan]]. It also serves as the prequel to the ''Ultraman Cosmos'' series.
129	** In 2006, ''Series/UltramanMebius'' and its tie-in movie ''Film/UltramanMebiusAndTheUltraBrothers'' were made "Comemmorating 40 Years of ''Ultraman''", revisiting the original Showa era universe (''Ultraman'' to ''Ultraman 80'') after 25 years of {{Alternate Universe}}s and featuring returning actors, characters and monsters from there.
130	** ''Series/UltraSevenX'', an adult-oriented CyberPunk SpyFiction, was released in late 2007 to commemorate the 40th anniversary of ''Series/UltraSeven''.
131	** ''Series/UltramanGinga'' was created in 2013 to celebrate Tsuburaya's 50th anniversary. Like ''Tiga'', it was the first brand-new full installment in several years; as the six years since ''Mebius'' only had spinoffs, movies, and repackaged reruns. Despite being made with NoBudget, ''Ginga'' (also like ''Tiga'' before it) was successful enough to launch a full {{Revival}} and start a multi-year run of new ''Ultraman'' series.
132	** 2015 was the 10th anniversary of both the [[ScrewedByTheNetwork unfortunately abrupt finale]] of the notoriously DarkerAndEdgier reboot attempt ''Series/UltramanNexus'', and the beginning of its successor ''Series/UltramanMax''. The then-incumbent series, ''Series/UltramanX'', had crossover episodes with both series. ''Nexus'' also saw a reunion of the cast and crew and a miniseries on the show's making.
133	** 2016 marked the 50th anniversary of ''Series/{{Ultraman}}'' as well as the 20th anniversary of ''Series/UltramanTiga''. So, Tsuburaya celebrated with an ''Series/UltramanX'' movie featuring guest appearances from Ultraman and Tiga (as well as their respective iconic foes Antlar and Fire Golza) and the series ''Series/UltramanOrb'', where the title hero is able to call upon the powers of previous Ultramen, most prominently Ultraman and Tiga. ''Ultraman Orb'' would go on to celebrate ''Series/{{Ultraseven}}'' and ''Series/UltramanDyna''[='s=] respective 50th and 20th anniversaries in 2017 by having the respective heroes prominently (and respectively) guest star in a movie and a spinoff series.
134	** 2020's ''Series/UltramanZ'' marks the 10th anniversary of the ''Franchise/UltramanZero'' movies by making Z an eager HeroWorshipper of Zero's.
135	** 2021 marks the 55th anniversary of the franchise and 25th anniversary of ''Series/UltramanTiga''. While Tsuburaya celebrated both, they noticably put more emphasis on the latter with ''Series/UltramanTriggerNewGenerationTiga'', a SoftReboot and modernized remake of ''Tiga''.
136	** The following season continued the trend that ''Trigger'' started with ''Series/UltramanDecker'', a similar 25th anniversary remake of ''Tiga''[='s=] own successor ''Series/UltramanDyna''. It also marked the 55th anniversary of ''Series/{{Ultraseven}}'' by allowing Decker to summon the same kaiju allies that Seven once did.
137	* ''Series/HowIMetYourMother'':
138	** 99 episodes of almost zero amount of information about the mother, then comes along episode 100 with a huge information overflow. And Creator/NeilPatrickHarris [[TheCastShowoff shows off]] his singing with a [[https://www.youtube.com/watch?v=mbBs2OcR8a8 musical tribute to suits.]] It played with TonightSomeoneDies by "killing off" one of Barney's suit jackets. His tailor even likening using its buttons on another suit to "organ donation".
139	** "The Slutty Pumpkin Returns", the SequelEpisode to "The Slutty Pumpkin", is an in-story example -- even though the series began in 2005, Ted first met the girl known as Slutty Pumpkin in 2001. The episode itself takes place in 2011, during which Ted finally meets the girl who wore the Slutty Pumpkin costume again, after years of waiting for her in the same "hanging chad" costume at the same Halloween party (not unlike [[ComicStrip/{{Peanuts}} Linus waiting for the Great Pumpkin]]).
140	** The 200th episode is ADayInTheLimelight for the Mother herself as she tells her side of the story at various points in the series.
141	* ''Series/TrueLife'' so far has had a "Where Are They Now" episode for its 100th episode (2007) and its 200th episode (2011). In them, they revisited some of the most memorable people (the 100th episode included a girl with Tourette's Syndrome and a little person who was a Britney Spears impersonator, 200th episode included an alcoholic who ran over her boyfriend and a girl who had alopecia).
142	* The tenth season premiere of ''Series/MysteryScienceTheater3000'' had TV's Frank returning to reap souls ("Second Banana Heaven was way too political") and Joel Hodgson returning to fix up the Satellite of Love.
143	** The show had its 200th episode land in the first Netflix season's third episode ''The Time Travelers''. It was mentioned at the tail end of the episode by Kinga Forrester, who lampshades that celebrating "false anniversaries" is important.
144	* The 100th episode of ''Series/ThirtyRock'' was a one-hour episode about the ShowWithinAShow's 100th episode, and was even titled "100th".
145	** The episode also featured special guest appearances from Creator/MichaelKeaton and Creator/TomHanks, the important plot point of Tracy deciding to leave movies to return to TV, the return of Dennis Duffy (a recurring character who was Liz's boyfriend in the first season) and a gas leak that caused the cast to reminisce about the past while in an altered state.
146	* The entire 25th and final season of ''Series/TheOprahWinfreyShow'' is a milestone celebration, with her bringing back her favorite or most shocking guests.
147	* The 100th episode of ''Series/{{Bones}}'' flashes back to how Booth and Brennan met and first worked together and has Booth confess his love for Brennan.
148	* In ''Series/{{Supernatural}}'''s 100th, Sam and Dean finally meet their half brother Adam and also rebuild their relationship.
149	** The 200th episode is a MusicalEpisode, featuring a school musical created by in-universe fans of the [[ShowWithinAShow books about the Winchesters' adventures]].
150	** The 300th episode features John Winchester being brought forward in time from a point prior to his death, allowing for a brief family reunion before he has to be sent back to avert a TemporalParadox.
151	* ''Series/GilmoreGirls'' 100th episode has Emily and Richard renewing their wedding vows.
152	* The 100th episode of ''Series/OneTreeHill'' has Karen return for Lucas's wedding where he is left at the altar, and Dan rescues Nathan and Haley's son Jamie after he is kidnapped.
153	* The 100th episode of ''Series/DesperateHousewives'' plays with the TonightSomeoneDies card by killing off a previously unseen character who has been a part of the main character's lives for over a decade, the flashbacks in the episode show his involvement in their lives. Season one characters Martha Huber and Yao Lin also make a reappearance.
154	* ''Series/{{NCIS}}'' celebrated their 200th episode "Life Before His Eyes" with a lot of [[ContinuityNod continuity nods]] to the previous eight seasons. WordOfGod says this episode was a "gift to the fans".
155	* The 100th episode of ''Series/CriminalMinds'' was actually called "100". The episode was told in AnachronicOrder with the team being interviewed by [[TyrantTakesTheHelm Strauss]] because [[spoiler: Hotch killed an infamous serial killer who murdered his ex-wife]].
156	* ''Series/TheVampireDiaries'' reached their hundred episode in "500 Years of Solitude", an episode focused on fan-favorite [[FemmeFatale Katherine]] that also features the guest appearance of characters who left the series long ago (Jenna, John, Alaric, Vicki, the Mikaelson siblings…)
157	* Meanwhile in soap operas, ''Series/{{Neighbours}}'' had celebrated both episode number milestones and anniversaries, usually by having some big event happen in the episode in question. Especially big milestones were the 1000th episode (Des and Jane's engagement party, which was crashed by Creator/GuyPearce), the 2000th episode (Helen's birthday party) the 10th anniversary (unaddressed onscreen, but a special book and video were released), the 4000th episode (Flick rescuing Lou and Rosie from a fire), the 20th anniversary (an in-universe documentary featuring numerous former Ramsey Street residents, some of whom returned to the street), the ''5000th'' episode (Paul being buried alive by his murderous son Robert), and the 25th anniversary (in late 2010). The 6000th episode (and the week leading up to it) created a mystery over an apparent murder attempt on Paul Robinson's life, which kept going for several months after. The 30th anniversary is to be marked in-universe by the Erinsborough Festival, again featuring returns from numerous residents (some of which haven't been in the street since 1990).
158	* ''Series/HomeAndAway'' has likewise celebrated milestones such as Episode 2000 (Angel's departure from Summer Bay), 3000 (Mitch's departure, as well as Alex and Dani's car crash), 4000 (Alf's birthday party, with numerous past characters returning, which also ended in a car crash) and the 20th anniversary (which saw Sally, a regular character since the first season, leave the bay).
159	* ''Series/TheBigBangTheory'''s 100th episode focused on the [[TheEndingChangesEverything possibility]] of [[OfficialCouple Leonard and Penny]] getting back together. They also had special behind the scenes video with the cast looked back at the series so far.
160	** The ''200th'' episode focused on Sheldon's birthday, and featured surprise appearances by Creator/AdamWest, Creator/StephenHawking, Creator/WilWheaton and Sarah Gilbert as Leslie Winkle (for the first time since Season Three)
161	* ''Series/{{JAG}}'' celebrated its 100th episode "Boomerang (Part I)" by filming it on location in Australia, and the 200th episode was a WhatIf.
162	* ''Series/SaturdayNightLive'' parodied this with their 100th Digital Short which was a music video called "We're Gonna Suck Our Own Dicks", a big musical CallBack to all the other Digital Shorts. The show itself has had some big celebrations of its own, though:
163	** The 15th anniversary was marked with a prime time retrospective that featured clips and interviews.
164	** The 25th anniversary season warranted a ''live'' prime time special prior to the season premiere, featuring a variety of cast members, guest hosts, and musical guests on stage and in the audience, along with tributes to castmembers who'd since passed away. After that, they didn't do another special of this magnitude until...
165	** The 40th anniversary special in February 2015, a prime time live show that ran ''three and a half hours''...plus a one hour RollOutTheRedCarpet arrival special beforehand! Highlights included such skits as a gigantic "Celebrity Jeopardy" round that had far more than three contestants, a medley of the most popular musical characters (Operaman, The Blues Brothers, etc.), Creator/EddieMurphy returning to the franchise after ''decades'' of avoiding it, etc. As a bonus, in the weeks leading up to the event VH-1 Classic turned over '''its entire schedule''' to rerunning favorite episodes from every season, moving backwards to the 1975 series premiere, which aired right before the aforementioned red carpet special began on NBC.
166	** Parodied again in a season 41 episode hosted by Creator/MelissaMcCarthy. She boasted in her monologue that the episode marked her fifth time hosting ''SNL'', and led cast members in a celebratory musical number. [[spoiler:Then Kenan Thompson (dressed as the number 5) interrupted by informing [=McCarthy=] that her appearance in the 40th Anniversary Special doesn't count as a complete hosting gig, bringing her tally down to 4 1/16.]] When she hosted again in season 42, [[spoiler:Steve Martin interrupted her closing comments, to congratulate her for ''officially'' hosting five times, as the cast presented her with a special jacket.]]
167	* ''Series/RetroGameMaster''
168	** As lampshaded in the ''VideoGame/ParappaTheRapper'' episode, a [=PS1=] game is played for special occasions.
169	** November 4, 2013 marked the tenth anniversary of the show, at which point it was officially classified a LongRunner. The show celebrated this milestone throughout the whole year.
170	* ''The Late Show with Creator/DavidLetterman''
171	** There is often has a celebratory episode on their anniversary date (August 31) or the episode broadcast nearest the date if it falls on a weekend. The celebrants often include Creator/BillMurray, who was Dave's guest on the first episodes of both the ''Late Show'' and ''Late Night''.
172	** Barely a year into ''The Late Show'' Dave announced they had broadcast 1,000 episodes with a huge '''1000''' chroma key. Then he said he misread and they'd actually done 100 episodes, with a much smaller and more subdued 100.
173	* The November 11, 2013 broadcast of ''Series/{{Panorama}}'' marked exactly 60 years of the show, and so it ended with [[https://www.youtube.com/watch?v=pIBnwQWdn4M a special credits montage]].
174	* On ''Series/NewTricks'', the 100th episode saw off the last original cast member, Dennis Waterman. (Particularly impressive because of BritishBrevity, and because the premise of the series was to assemble ex-cops who were already ''beyond pension age'' to begin with.)
175	* The 8th season premiere of ''Series/RuPaulsDragRace'' was the 100th episode of the show and also featured the 100th contestant overall. The show celebrated these milestones by having a main challenge that called back several design challenges from the entire run of the show.
176	* The 100th episode of ''Series/PersonOfInterest'' ended with the deaths of Root and Elias (for real this time), and Finch vowing to destroy Samaritan once and for all, consequences be damned.
177	* The Series/ArrowVerse:
178	** ''Series/{{Arrow}}'':
179	*** The 100th episode "Invasion!", is part of a four-part crossover with ''Series/TheFlash2014'', ''Series/LegendsOfTomorrow'', and ''Series/{{Supergirl 2015}}''. It also features call backs to nearly the entire series, the return of several characters, and a battle royale with Oliver and his friends vs illusory versions of several past villains.
180	*** The 150th episode "Emerald Archer" features an InUniverse documentary about the vigilantes (and narrated by Creator/KelseyGrammer no less), which includes cameos from several characters long since departed from the show.
181	** ''Series/TheFlash2014'':
182	*** The 100th episode "What's Past is Prologue" features many {{Call Back}}s to previous episodes, through the narrative of Barry and [[KidFromTheFuture Nora]] having to run back to several points in the past in order to retrieve various components needed to make a weapon they believe will help defeat current BigBad Cicada.
183	*** The 150th episode "Heart of the Matter, Part 1" is the first part of the Season 7 finale, and features the return of Jay Garrick and Nora, and introduces us to Nora's brother Bart.
184	** ''Series/Supergirl2015'': The 100th episode "It's a Super Life" features Mr. Mxyzptlk helping Kara deal with her guilt over not telling Lena her secret identity by showing her various {{Alternate Timeline}}s where she did so at various points in the show's run, allowing various prominent past characters to return temporarily.
185	** ''Series/LegendsOfTomorrow'': The 100th episode "Wvrdr Error 100 Not Found" sees Astra and Spooner [[JourneyToTheCenterOfTheMind entering the mind]] of the [[HumanityEnsues newly human]] Gideon after she loses consciousness. In trying to help her by traveling through and restoring her memories, we're treated to scenes featuring most of the original Legends, all of whom except for Sara have by this point either died or been PutOnABus.
186	* The first half of ''Series/FullerHouse''[='=]s third season premiered on September 22, 2017 - exactly 30 years to the day its parent series ''Series/FullHouse'' premiered in 1987.
187	* ''Series/TheMickeyMouseClub'': A special episode of the 1990's revival featured a reunion of Mouseketeers from the original 1950's show, commemorating both the revival's 100th episode and the original show's 35th anniversary.
188	* The 100th episode of ''Series/LastWeekTonightWithJohnOliver'' had [[https://images.genius.com/18d3d1fcb8a58b5162648c3870cc95b0.640x360x1.png a title card remarking on this]], and [[https://www.youtube.com/watch?v=fpbOEoRrHyU a main segment]] on net neutrality that served as a sequel to one in the inaugural season 3 years prior.
189	* The [=100th=] episode of ''Series/AgentsOfSHIELD'' is the Season 5 episode "The Real Deal", wherein the SpecialEditionTitle contains every special logo used over the run of the series, a RealityBleed conjures illusions of various past antagonists, and most importantly, [[OfficialCouple FitzSimmons]] finally get married.
190	* ''Series/HellsKitchen'' marked its 100th dinner service with a special black tie event, and the four previous winners were invited to sit at the chef's tables.
191	** Season 20 downplays the normal celebration -- while there are still nods to seasons past, the theme of Young Guns was looking towards the future. All the contestants that season were in their early 20s and grew up with the series.
192	* ''Series/JimmyKimmelLive'':
193	** For the 10th anniversary show in 2013, Creator/MattDamon, Creator/JimmyKimmel's SitcomArchNemesis, staged a HostileShowTakeover, renaming the show ''Jimmy Kimmel Sucks!''. Jimmy was tied up, gagged, and relegated to the background, while Matt interviewed various people who all proclaimed their hatred for Jimmy.
194	** The 20th anniversary show in 2023 had Creator/GeorgeClooney, Music/SnoopDogg, and Music/{{Coldplay}}, who were all Jimmy's first guests, appearing again. Jimmy also interacted with [[DigitalDeaging a digitally-recreated incarnation of himself from 2003]].
195	* ''Series/AmericanHorrorStory'' celebrated its 100th episode (simply titled "Episode 100", in contrast to the usual punny and/or otherwise indicative episode titles) at the midway point of its ninth season, subtitled ''[[Series/AmericanHorrorStory1984 1984]]''. Recent seasons of the show had developed something of a reputation for delivering a major format switch-up at the halfway point, and the details of the second half of the season (beginning with the hundredth episode) were kept strictly under wraps beforehand. [[spoiler:However, despite the build-up, the episode ended up functioning primarily as a bridge between the slasher movie send-up that was episodes 1-5 and the set-up for the reunion in episodes 7-10. The only real "surprise" was that the episode covers the years 1985-1989 - rendering the title of the season somewhat misleading.]]
196	* For its 10-year/Season 20 and 20-year/Season 40 anniversaries (due to airing biannually), ''Series/{{Survivor}}'' brought back players from previous seasons to play again (though they sometimes also do so when it's ''not'' a milestone).
197	* ''Series/GreysAnatomy'' has done this for it's 100th, 300th, and 350th episodes.
198	** "What a Difference a Day Makes" in season 5 was the 100th and featured the long-awaited wedding between Izzie and Alex.
199	** "Who Lives, Who Dies, Who Tells Your Story" is the 300th episode in season 14. Meredith, and the others help treat dopplegangers of George, Cristina, Izzie, and Derk, with injuries similar to those they've experienced before, and at the end of the episode Meredith wins her Harper Avery award.
200	** "My Shot" from season 16 is the 350th episode, where Meredith defends her medical license. Letters vouching for her are delivered from various departed castmates including Cristina, Arizona, Callie, and Addison; flashbacks of her more notorious surgeries are seen, and even her former patients (including her very first) appear on the stand.
201	* ''Series/{{Glee}}'' has "100", which sees the season five club disband due to losing at Nationals but also celebrate the last of the originals graduate in this episode and the next. Almost every song sung in the episode is a reprise of a previously sung number, which were voted on by fans.
202	* ''Series/{{CSINY}}'' brushed the trope with their 100th episode as well. Counting backwards, the numbers 100-92 are shown in various places such as floor numbers in a building, taxi cab numbers, etc. The title, "My Name Is Mac Taylor," is spoken by several characters with that moniker, since the episode involves a killer looking for someone who goes by the name. Curiously enough, Det. Taylor does NOT utter the line, although he introduces himself that way quite often over the series' 9-year run.
203	* ''Series/LateNight'': For the show's 40th anniversary on February 1, 2022, Creator/DavidLetterman, who hosted the first iteration of the show, was the main guest, chatting with current host Creator/SethMeyers.
204	* ''Series/ObiWanKenobi'' was originally due to premiere on May 25th, 2022, the 45th anniversary of ''Film/ANewHope'' and the first appearance of Obi-Wan Kenobi, but was ultimately pushed back to the 27th.
205	* Disney dropped ''Series/BearInTheBigBlueHouse'' on the Disney+ streaming service on October 19th, 2022 -- a day before the show's 25th anniversary.
206	* ''Series/InaiInaiBaa'' has done several anniversary celebrations:
207	** For the 20th anniversary, a special aired in the winter of 2016, which featured every oneesan and puppet character (save for Penta) appearing. Parts of this special would be released to DVD.
208	** The 25th anniversary saw releases of special merchandise, a special week of shows which played older segments featuring the past onee-sans, special web videos featuring Wan Wan, U-Tan and Haru-chan, and two specials, ''Wan Wan 25'' and ''Wan Wan The World''.

Context MilestoneCelebration / LiveActionTV