* The "Night of Elizabeth Taylor", broadcast on CBS around 1995-96, saw a diamond necklace lost by Creator/ElizabethTaylor became a common plot element linking four {{SitCom}}s -- ''TheNanny'', ''Cant Hurry Love'', ''MurphyBrown'' and ''High Society'' -- in one massive crossover. It was intended as an embedded advertisement for Taylor's new perfume, Black Pearls.
* Disney did a triple-episode MMC with three of its shows. The show was entitled ''[[ThatsSoRaven That's So]] [[TheSuiteLifeOfZackAndCody Suite Life Of]] HannahMontana'', with one classed as a Suite Life episode, one as a Raven episode, and one as a Hannah Montana episode, where Hannah and Raven visited the hotel the twins live in.
** Likewise, there's the ''Wish Gone Amiss'' triple-episode, except it is more loosely tied together. It all involves the title characters from ''CoryInTheHouse'', ''TheSuiteLifeOfZackAndCody'', and ''HannahMontana'' making a wish on apparently the same shooting star. Each episode has its own method of returning to the [[StatusQuoIsGod Status Quo]] -- Cory gets a literal ResetButton, Zack and Cody's wish was [[AllJustADream all just Zack's dream]], and Hannah returns her life to normal when Jackson unwittingly wishes that the world did not know Hannah's double life.
** There's also the ''[[WizardsOfWaverlyPlace Wizards]] [[TheSuiteLifeOfZackAndCody On Deck]] with HannahMontana'' that goes by the same formula that the ''That's So Suite Life of Hannah Montanna'' did, except with the stars visiting the hotel's ship instead of the hotel itself.
* ''Series/KamenRiderDecade'' is this in regards to the Heisei era ''Franchise/KamenRider'' shows. The main character dimension jumps into {{alternate universe}}s based on the 9 previous ''Kamen Rider'' series of the last 10 years (as well as the canonical universe of ''Series/SamuraiSentaiShinkenger''). Plus, the first movie features every main Rider created before Decade, even ones that only had appeared in one-shot movies previously.
** The second movie, a GrandFinale, even includes some {{postmodern|ism}} commentary on the "interesting effects on the fiction chosen" mentionned in the opening paragraphs. To quote the original universe [[Series/KamenRiderKiva Wataru]]: "The tales of the Riders were something that would be eventually lost to time. But because of Decade's battles, they will remain fresh in people's minds..."
* ''Series/KamenRiderFourze'' puts an interesting spin on the concept by having Fourze meet new, modernized versions of other ShotaroIshinomori characters. The SpaceIronmenKyodain appear in TheMovie, while Inazuman, Series/BishoujoKamenPoitrine, and the Akumaizer 3 appear in Fourze's crossover with ''Series/KamenRiderWizard''; on top of that, the new Kyodain and Akumaizer are [[AdaptationalVillainy villains rather than heroes]].
* Similarly to ''Series/KamenRiderDecade'', ''Series/KaizokuSentaiGokaiger'' is a crossover series. But compared to ''Decade'', in which the main character could only be Riders of the last decade, the Gokaigers can transform into any of the Sentai from the past 34 teams (barring {{Sixth Ranger}}s - that is, until their own SixthRanger joined up). Additionally, ''Gokaiger'' establishes that all Franchise/SuperSentai took place in a single universe.
* There's also ''Film/KaizokuSentaiGokaigerVsSpaceSheriffGavanTheMovie'' -- yeah, that means the [[Series/SpaceSheriffGavan Space]] [[Series/SpaceSheriffSharivan Sheriff]] [[Series/SpaceSheriffShaider Trilogy]] is revealed to be set in the Sentai universe too. Perfectly justified that Inazuma Ginga in ''[[Series/TaiyouSentaiSunVulcan Sun Vulcan]]'' episode 45 was wanted by the Galactic Police. Shozo Uehara who wrote the character would be the main writer of the Space Sheriff trilogy. It all comes to a head with ''Film/KamenRiderXSuperSentaiSuperheroTaisen''.
** There's now a sequel. How do you like, the KamenRiders, the SuperSentai teams, the Space Sheriffs, ''and frikkin' Inazuman'' in one movie?
* ''[[http://www.childrenspartyatthepalace.com/ The Children's Party at the Palace]]'', a British production broadcast live from Buckingham Palace on June 25, 2006, celebrated Queen Elizabeth II's 80th birthday with a wild romp featuring dozens of literary and TV characters including (among many others) Cruella [=DeVille=], PeterPan and Captain Hook, Sir Topham Hatt from ''ThomasTheTankEngine'', WallaceAndGromit, the White Rabbit from ''Literature/AliceInWonderland'', EnidBlyton's ''The Famous Five'', Franchise/HarryPotter, Ron Weasley, Hermione Granger and Neville Longbottom from the ''Film/HarryPotter'' movies, and starred the Queen as herself.
* The ''Series/SabrinaTheTeenageWitch'' episode "Inna-Gadda-Sabrina" extended its story through the following three shows that night: ''BoyMeetsWorld'', ''You Wish'', and ''TeenAngel''. Each show was set in a different time period in going with the theme.
** It wasn't the first time - in fact, quite a few crossovers spanned the entire TGIF lineup from time to time, and even an occasional though less involving tie-in for all ABC weekly sitcoms during this period.
** There was also one that was linked by Steve Urkel. He ends one episode of ''FamilyMatters'' by blasting through the Winslow's roof in a jet pack, and he crashes into the Lambert's roof at the beginning of the an episode of ''StepByStep'' where the plot centers around him. I forget if any other shows were connected as well.
* A very simple one, but the ''iStart A Fan War'' episode of ''Series/ICarly'' included characters from DrakeAndJosh and {{Zoey 101}}, helping to fill out the NickVerse.
* ''Film/AMuppetFamilyChristmas'' included characters from all Muppet-related programmes: ''TheMuppetShow'', ''SesameStreet'', ''FraggleRock'' and even ''MuppetBabies''.
** Its conclusion even featured [[CrowningMomentOfHeartwarming a brief cameo of Jim Henson as himself]].
* In ''Series/DoctorWho'', the climax of the Second Doctor serial ''The Mind Robber''. D'Artagnan vs. Cyrano de Bergerac! Blackbeard vs. Sir Lancelot! Plus Gulliver and Rapunzel on the sidelines.
* ''Series/LawAndOrder'' crossed over with ''HomicideLifeOnTheStreet'' a few times, until they eventually just decided they were set in the same continuity altogether, to the point of having JustForFun/JohnMunch, who originated in the latter show, permanently set up shop in the former.
* [[http://home.vicnet.net.au/~kwgow/crossovers.html The Tommy Westphall Hypothesis]] states that dozens if not hundreds of television series have all happened within the mind of [[StElsewhere a young autistic boy living in Baltimore]].
** JustForFun/JohnMunch is a central figure in this Hypothesis.
* ''TheEarthDaySpecial'', which aired on Creator/{{ABC}} in 1990, was a huge crossover featuring just about every pop culture icon from TheEighties in a very bizarre, thoroughly nonsensical plot.
** Also in 1990, ''CartoonAllStarsToTheRescue'', the ultimate VerySpecialEpisode combining well over a dozen Eighties cartoon characters. Aired once and only once, it's full of {{Narm}} yet also bizarrely entertaining. Rumor has it that it's never been aired since because Jim Davis claimed he hadn't authorized {{Garfield}}'s inclusion in the show.
* In the ''Series/{{CSI}}''-verse, the original series crossed over with the Miami series in 2002 to serve as the pilot for the latter; the Miami series then crossed over with the New York series in 2004 to serve as that series' pilot, and the series crossed over again in a two-hour storyline in 2005. The original series also crossed over with ''Series/WithoutATrace'' in 2007 a two-hour storyline across both series. Following the departure of William Petersen (who opposed the spinoffs and did not appear in any scenes featuring the Miami team in "Cross Jurisdictions"), CBS put together a massive crossover in 2009 spanning all three series that involved the Las Vegas series' Raymond Langston going to Miami and New York while investigating a human trafficking organisation.
* The 2009 ''TwoPintsOfLagerAndAPacketOfCrisps'' UsefulNotes/ComicRelief special, which brought in characters from BBC Three's other sitcoms ''{{Grownups}}'' and ''ComingOfAge''. And yes, Sheridan Smith was ActingForTwo.
* The second western MMC took place a year after the first on what seemed to be an ordinary episode of ''Series/{{Maverick}}'' called "Hadley's Hunters"; during the course of that hour he ran into people from 5 other shows: ''Series/{{Lawman}}'', ''{{Cheyenne}}'', ''{{Bronco}}'', ''{{Sugarfoot}}'', and he stops by the office from ''{{Colt 45}}'' but nobody was home (a reference to the show being recently canceled).
** Strangely he also ran into the parking lot attendant from ''77SunsetStrip'' which was set in the 1960s -- I guess he had an ancestor who lived in the old west.
* The final western MMC took place over 30 years later in the made for tv movie ''The Gambler Returns: The Luck of the Draw'', where the title character crosses over with 10 different series. During the course of the film TheGambler meets people from ''BatMasterson'', ''TheLifeAndLegendOfWyattEarp'', ''Series/{{Maverick}}'', ''{{Cheyenne}}'', ''Series/KungFu'', ''Series/TheRifleman'', ''TheWesterner'', ''TheVirginian'', and ''Series/{{Rawhide}}'', plus the main game was in honor of the main character from ''HaveGunWillTravel''.
* ''Series/OnceUponATime'' is having a lot of fun with this trope. King Midas, [[spoiler:Captain Hook, Lancelot (apparently Moorish in this timeline), [[Literature/{{Frankenstein}} Dr. Frankenstein]], Peter Pan, and Mulan]] have all shown up. Literature/{{Snow White|and the Seven Dwarfs}} is the schoolteacher, Granny and Red Riding Hood run the diner, and the Wicked Stepmother getting therapy from Jiminy Cricket. Yeah. [[DisneyOwnsThisTrope The show's run by Disney, why do you ask?]]

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