->''"Ben and I decided that we needed more strips and punchlines [[ContinuityPorn that only make sense to hardcore readers]]. Look forward to [[ContinuityLockOut jokes so inaccessible even we, the authors, don't get them]]."''
-->-- '''[[TheRant Lewis's Notes]]''', ''Webcomic/TerrorIsland'', [[http://www.terrorisland.net/strips/200.html Strip #200]]

A continuity nod is a reference to some aspect in a series' past or an occurrence within the [[TheVerse universe]]. The nod is not so much a major plot point, but more of a tilt of the hat to the fans that may know these little details. It is a sort of ShoutOut.

In remakes of older TV shows or movies, this may often manifest itself as a form of StuntCasting. If characters reference something outside the [[TheVerse universe]] itself but has special meaning some other way (such as an AlternateContinuity or adaptation), it's a MythologyGag. If it's a joke about the actors of the parts it's ActorAllusion or CastingGag. References towards something that's been written out (or {{Take That}}s towards something that people ''wish'' were written out) are {{Discontinuity Nod}}s. A nod that affects the plot in some way can be considered a OlafsHammer.

NeverLiveItDown and RememberWhenYouBlewUpASun are {{Sub Trope}}s. ObliviousMockery is also a subtrope when the viewer knows about the action being mocked.

Distinct from a CallBack, as it does not actually drive any plot development, or a CallForward, as it isn't going to be a plot point later on. If a single scene presents an unusually large number of Continuity Nods, all at once, you may have fallen under a ContinuityCavalcade. If there are so many Continuity Nods they detract from the story itself, it's ContinuityPorn. Naturally contrasts with SeriesContinuityError. A SongOfSongTitles might have this.

''Remember, it's only a continuity nod if the events happen in the same continuity. Otherwise it's a MythologyGag.''

----

!!Example Subpages

[[index]]
* ContinuityNod/AnimeAndManga
* ContinuityNod/{{Film}}
* ContinuityNod/{{Literature}}
* ContinuityNod/LiveActionTV
** ContinuityNod/DoctorWho
* ContinuityNod/VideoGames
* ContinuityNod/WesternAnimation
[[/index]]

!!Other Examples

[[foldercontrol]]

[[folder:Comics]]
* Too many to count in ''ComicBook/TheSandman'', but the most memorable is the "Endless Nights" story, "The Heart of A Star" -- Superman's ultimate origin is revealed to be a conversation between Krypton's sun and the first personification of Despair on the nature of beauty.
** Which is a brilliant GeniusBonus by Gaiman. The idea is that Superman only survived so he could feel the despair of being the last Kryptonian - but of course, Despair always fails.
** This story also features a character called Killalla of the Glow, who is implied to be one of the first aliens to master the energy later marshaled by the Green Lantern Corps.
*** Heck, she's as-good-as-stated to be one of the Guardians, before the female Oans [[OneGenderRace went their separate way]].
** It's never directly stated, but there are enough hints to figure out that Matthew the raven was [[spoiler:Matthew Cable]], from Creator/AlanMoore's series [[spoiler:''Comicbook/SwampThing'']], before he died. Gaiman owes a lot to Moore in getting his career started; there are several nods in Sandman to Moore's work in the DCU.
* A throwaway line in Creator/PaulCornell's ''[[ComicBook/{{Excalibur}} Captain Britain]]'' refers to Merlin as one of the Higher Evolutionaries, acknowledging the ''Magazine/DoctorWhoMagazine'' comic strip's presence in the Franchise/MarvelUniverse for the first time since Creator/AlanMoore was writing both characters.
** In one issue of ''Excalibur'' Kitty and Rachel are being accosted by Daleks while queuing at a bureaucratic office
** Plus, Merlin's appearance in Cornell's series looks to be a CallBack to the way he looked in the DWM strip.
* Writers and artists often use scenes set in the Batcave's [[SuperheroTrophyShelf trophy room]] to give a Continuity Nod to previous ''Franchise/{{Batman}}'' stories. Traditionally included are the giant penny from a 1947 fight with The Penny Plunderer, a T-Rex from a 1946 adventure on Dinosaur Island, and a memorial to Jason Todd, first seen in ''Comicbook/TheDarkKnightReturns''.
** Also, Batman once investigated murders at a movie set, where the movie being shot was a WWI flying action/drama. The misunderstood VillainProtagonist of said film was Hans von Hammer, in our world the main character of Creator/DCComics' ''Comicbook/EnemyAce'' series.
* ''Comicbook/ElfQuest'' examples:
** In the science-fiction "sequel" ''The Rebels'', Gestrelle Luricahn owning elfin artifacts is just part of her job/field of research. The fact that nearly all of those that we see decorating her room had some importance in previous ''Comicbook/ElfQuest'' stories is a Continuity Nod.
** Sometimes panels from earlier comics get "paraphrased", using the same composition and (if possible) characters; for example one [[http://www.elfquest.com/gallery/OnlineComics/KOBW/KOBW03/DisplayKOBW03.html?page=19 in ''Kings of the Broken Wheel'' 3]] is modeled after one [[http://www.elfquest.com/gallery/OnlineComics/OQ/OQ01/DisplayOQ01.html?page=5 in the very first]] ''ElfQuest'' story ever.
** In a montage of the Wolfriders' dens in ''Wild Hunt'', Tyleet's can be identified by the ornament that her long-dead adoptive son used to wear as a headband.
* Quite a few in ''TheLeagueOfExtraordinaryGentlemen'', which is to be expected as its continuity arguably includes every book ever written.
* ''Comicbook/{{Asterix}}'' does this a few times. In ''Asterix in Britain'', you can see a few souvenirs referring to previous adventures on a shelf in Asterix and Obelix's house (including a model sphinx from ''Asterix and Cleopatra'' and a Visigoth helmet from ''Asterix and the Goths'').
* Occurs regularly in ''ComicBook/AstroCity'', as befitting a series with a single writer. Most Continuity Nods appear as sidelong references to other characters and events in the chronological past/present, even if the subject hasn't had a published appearance yet.
** [[TheCape Samaritan]] briefly mutters "3.2" when he arrives to visit Steeljack in "The Tarnished Angel." This is a reference to Samaritan's DayInTheLife story, "In Dreams," where it's shown he keeps track of how many seconds he spends flying from one scene to another.
** In "Show 'Em All," as Jack-In-The-Box dodges The Junkman's aerosol bombs, he casually mentions having "recent experience" in dodging mid-air explosions. This refers to a single panel from the earlier "Confession" story arc, where Jack-In-The-Box eludes capture from a missile-firing helicopter.
** Also from "Confession", Brian begins his super-hero career by working as a busboy in Bruiser's Bar & Grill, run by retired [[TheGoldenAgeOfComicBooks Golden Age]] hero [[OldSuperhero The Black Badge]]. Both the Black Badge and Bruisers' play small but pivotal roles in the later "Dark Ages" story arc.
** Creator/KurtBusiek ''loves'' to put Continuity Nods in all of his works, helped by his encyclopedic knowledge of comic book history.
* A subtle one from ''[[Comicbook/SpiderMan The Amazing Spider-Man]]'' vol. 2 #55: Peter Parker, currently working as a teacher at his old high school, talking to the school secretary (or administrator?) who remembers him from when he was a student:
-->'''Peter:''' Good afternoon, Maude. Looking beautiful as always.
-->'''Maude:''' Oh Peter, you lie beautifully darling, have ever since the ninth grade, so don't stop.
-->''Ninth grade was when Peter was about 15, i. e. when he became Spider-Man and had to lie to maintain his secret identity.''
* In ''TheBeano'' Annual 2009 the Ratz (a group of rats from a 2000s Beano comic strip) briefly meet the Nibblers (a group of mice from a 1970s/1980s Beano comic strip).
* During Creator/PaulCornell's "[[ComicBook/TheBlackRing Black Ring]]" story arc in ''ComicBook/ActionComics'', one issue was about VandalSavage having a prophecy relating to LexLuthor. It featured two flashbacks to previous meetings between the two. One was from the relatively recent ''ComicBook/SalvationRun'', the other was from ''TheFlash'' #124, back in 1997.
* In Issue #2 of ''ComicBook/RedHoodAndTheOutlaws'', Red Hood gets an air hostess' number. They met in Batman #426, 20 years ago. She still remembers his drink order, although in modern continuity, they probably met 2-3 years ago. And he mentions 'A Death in the Family', although that is a ShoutOut. Her name is Isabel Ardila, by the way.
** In issue #6, it's revealed that Red Hood's costume is actually one of Nightwing's old costumes. Though in-universe information is lacking thanks to the recent reboot, it seems to be based on Nightwing's ''Renegade'' costume.
** The ''Night of the Owls'' tie-in nods to the revelation in ''Batman'' that[[spoiler: Haley's Circus (of which Nightwing was a performer) was a recruitment service for the Court of Owls. It may also be a reference to Red Hood's pre-''Crisis'' history as a circus performer.]]
** The ''Death of the Family'' tie-in has [[spoiler:the Joker forcing Jason to relive the circumstances of his death in the original ''A Death in the Family'' arc.]]
* In ''MortadeloYFilemon'', any appeareances of returning villians are punctuated by a side note pointing to the last story in which they starred. And then there is the book ''Venganza Cincuentona'' where a dozen of the most iconic MonstersOfTheWeek return to fight the heroes together.
* ''ComicBook/MyLittlePonyFriendshipIsMagicIDW'':
** With the return of changelings, naturally the [[Recap/MyLittlePonyFriendshipIsMagicS2E26ACanterlotWeddingPart2 wedding episode]] gets brought up. Apparently Rainbow Dash barely remembers it because she had too much of Pinkie's Tutti-Frutti Sherbet Sugar Punch.
** Much of issue #2 is spent in a mine that once was worked by the Diamond Dogs. Several of the background elements allude to their dog-nature (bones and doghouses).
** In issue #2, when the Changelings work to create discord between the Mane Six, Pinkie is told that she is annoying to her friends, and temporarily reverts to her "Party of One" straight-hair look.
** The map at the end of issue #2 shows [[Recap/MyLittlePonyFriendshipIsMagicS2E11FamilyAppreciationDay Timber Wolf territory and the Zap Apple grove]], the [[Recap/MyLittlePonyFriendshipIsMagicS1E6BoastBusters Ursa Major caverns]], the "[[Recap/MyLittlePonyFriendshipIsMagicS2E1TheReturnOfHarmonyPart1 Sight of the Battle of Discord]]" (under quarantine), and the [[Recap/MyLittlePonyFriendshipIsMagicS1E19ADogAndPonyShow Appaloosan Mountains]] (home of the Diamond Dogs).
** End of issue #2: [[spoiler:[[Recap/MyLittlePonyFriendshipIsMagicS2E1TheReturnOfHarmonyPart1 The antagonists separate the group, their friendship gets broken when they make jabs at each other's flaws and the group dissolves.]]]] ''To be continued...'' All that's missing is [[MoodWhiplash the theme tune kicking in]] [[RunningGag out of nowhere...]]
** [[Recap/MyLittlePonyFriendshipIsMagicS3E6SleeplessInPonyville Luna being]] a DreamWalker is brought up, she's even described as the "Protector of Dreams" a couple of times in the second story-arc.
** How Luna became Nightmare Moon and how she was defeated by the Elements of Harmony set the basis of the new evil for this story.
** Rainbow Dash once again pulls off a Sonic Rainboom to try and save Rarity, see HopeSpot.
** We're reminded once again that one of Twilight Sparkle's biggest fears is being rejected by Princess Celestia.
** [[Recap/MyLittlePonyFriendshipIsMagicS2E10SecretOfMyExcess The Fire Ruby]] returns in #6.
** The Cloud Gremlins from the Rainbow Dash micro-comic appear in Rainbow's nightmare.
** Something of a minor CallForward; the hat Rainbow Dash wears in Fluttershy's nightmare in #6 is the same hat she wears at [[spoiler:[[Recap/MyLittlePonyFriendshipIsMagicS3E13MagicalMysteryCure Twilight's coronation]].]]
** Rainbow Dash considers what Daring Do would do in their imprisoned situation.
* In ''ComicBook/MyLittlePonyMicroSeries'' Issue #3 Twilight mentions that after the events of ''Lesson Zero'', she of all ponies knows how too much work stress can make a pony snap.
** When Rarity first leaves for her retreat, Pinkie tells her to not forget to write [[Recap/MyLittlePonyFriendshipIsMagicS3E7WonderboltsAcademy while glaring at Rainbow Dash]], with Dash sheepishly stating that she meant to.
** Luna appears on Rarity's dreams, singing "Hush now, quiet now".
** The line "The pony everypony should know" (from "Sweet and Elite") is repeated a few times when Flax and Wheat are whisked off by the Elite.
** The cover of the magazine AJ is reading at the start features the cleaned-up Hayseed Turnip Truck, from the 2-page short at the end of the comic.
*** The short story makes a direct reference to Hayseed's brief scene in [[Recap/MyLittlePonyFriendshipIsMagicS2E9SweetAndElite Sweet and Elite]].
* ''ComicBook/SonicTheHedgehogMegaManWorldsCollide'' has ''several'' to both the ''Franchise/SonicTheHedgehog'' and ''[[VideoGame/MegaManClassic Mega Man]]'' video games and comics.
* During Nightwing and Batgirl's conversation in ''ComicBook/ForeverEvil'' #1, Babs references the recent ''ComicBook/DeathOfTheFamily'' crossover and the Bat Family's currently strained relationship with Bruce.
** Also in reference to ''ComicBook/DeathOfTheFamily'', Penguin is seen talking to Bane about TheJoker and paying him back for what happened.
[[/folder]]

[[folder:Fan Works]]
* [[FanFic/{{Cenotaph}} Cenotaph]] features a great many of these, mostly as nods to how Taylor's anti-heroism evolved in the origional timeline. Occasionaly this leads to LampshadeHanging. For example: she notes that you don't get to [[AlternateUniverseFic become a crimelord by accident...]]
* ''Fanfic/TheLionKingAdventures'' features hundreds upon thousands of these. It would be insane to list them all.
* ''Fanfic/KyonBigDamnHero'' is littered with them, from mentioning who received their tanabata wishes first to Koizumi giving an explanation to Haruhi over a cup of coffee, to a reference to the source material's Drama CD, where Haruhi wrote a literal EarWorm and Hare Hare Yukai.
** And now, [[spoiler:[[HaruhiChan ACHAKURA]]!!!]]
* ''{{Company0051}}'', a FanWebcomic set in the Franchise/{{Halo}}verse, includes several:
** When finding the crashed Covenant ship, John-117 identifies it as a Seraph-class starfighter.
** John directly cites [[spoiler:TheCaptain]] as having directly violated Article II, subsection 7 of the Cole Protocol, which directly forbids the retrieval of Covenant artifacts and technology until the available party is certain that the item is cannot be tracked.
** The armor the kids get at the end looks very similar to the Marine uniforms from Combat Evolved.
* The {{Robotech}} fanfics [[http://www.fanfiction.net/s/2241483/1/Scoop Scoop]] and [[http://www.fanfiction.net/s/4210098/1/Valkyrie_Nights Valkyrie Nights]] contain scenes from the canon material, and the dialogue from those scenes were transcribed word-for-word.
* In [[http://www.fanfiction.net/s/8897431/1/Child-of-the-Storm ''Child of the Storm'']], nods to Marvel Comics and even DC continuity are very common. They also double as {{Foreshadowing}} in that they hint at a wider universe.
* The ''Series/ForeverKnight'' virtual continuation ''FanFic/FK4'' has a bunch of references to small details in the show which came up once and were never mentioned again. For example, Natalie's cat and Tracy's knowledge of tattoos.
* ''FanFic/StarsAbove'' is loaded with references to [[Manga/LuckyStar both]] [[Anime/PuellaMagiMadokaMagica franchises]] that form up its IntercontinuityCrossOver, as the authors are insanely rabid fans of both series.
* ''FanFic/TheTaintedGrimoire'' has one where the Camoan native who cheered Luso and Cheney up in Chapter 63 turned out to be the father of the girl whom Luso, Cheney and Hurdy helped all the way back in Chapter 8.
* Whenever a new invention is introduced in ''Fanfic/CalvinAndHobbesTheSeries'', Hobbes will usually reference Calvin's previous inventions and the hijinks that ensued.
** Also, Rosalyn refuses to babysit Calvin in "A Day at the Office" because of the antics she endured in "Attack of the Vampire Babysitter".
** In "Thunderstorm", Calvin mentions Brainstorm's ''earlier'' plot to steal the world's electricity.
*** Thunderstorm himself references Jack's left arm being loose, which ''infuriates'' Brainstorm:
--> "'''''I'LL HAVE YOU KNOW IT DOESN'T!''''' JACK IS EQUIPPED WITH AUTO-REPAIR NANOTECHNOLOGY, NOW! THAT ARM IS ON THERE FOR GOOD! '''''[[MediumAwareness WE HAVEN'T EVEN USED THAT GAG SINCE OUR FIRST APPEARANCE ON THE SHOW!]]'''''"
*** Calvin references Brainstorm's earlier reluctance to use the EnemyMine trope, and Socrates is surprised that he hadn't heard it (he wasn't present in that episode).
* ''FanFic/RainbowInTheDark'' contains many examples of this, [[http://www.fimfiction.net/story/73406/rainbow-in-the-dark helping greatly]] to make the story feel less episodic than most multichapter fanfics.
* ''Fanfic/AceCombatTheEquestrianWar'' contains many of those.
* The ''FanFic/FacingTheFutureSeries'' does this as much as [[WesternAnimation/DannyPhantom the series it's based on]].
* ''FanFic/StargateEquestria'': "Undomesticated equines could not remove me."
* Fan stories set in Franchise/TolkiensLegendarium can make nods to Tolkien's own works. Some readers may miss these references:
** The title of ''FanFic/AFarGreenCountry'' is a nod. The phrase "a far green country" appears twice in ''Literature/TheLordOfTheRings''. Frodo dreams of it in book I, chapter 8. Then Frodo sees Valinor in book VI, chapter 9: "he beheld white shores and beyond them a far green country under a swift sunrise."
** In ''FanFic/TheGamesOfTheGods'', Book One, Chapter 71 explains why Dior, Steward of Gondor, never married. This is a nod to ''Literature/ThePeoplesOfMiddleEarth'', which established that Dior had no son.
** In ''FanFic/TimeWillTell'', chapter 27/28 "The Council of Elrond", Gandalf describes how Jorryn "talked in her sleep". This is not a new trick. Back in ''The Lord of the Rings'', Book II, Chapter 1, Gandalf told Frodo that he "talked long in your sleep". Both cases show how Gandalf can read sleeping minds.
** The second-last chapter of ''Time Will Tell'' is "A Long Expected Wedding". The first chapter of ''The Lord of The Rings'' is "A Long-Expected Party".
* The author of Fanfic/JusticeSocietyOfJapan clearly loves the mythos of TheDCU, and makes references to it whenever possible.
* The WesternAnimation/MyLittlePonyFriendshipIsMagic fan fiction ''Fanfic/OurTrueColors'' makes a number of references to events which occured in the show.
* The GundamWing story ''FanFic/WingsToFly'' frequently points out bits of Lucrezia Noin's backstory from the canon; in the first chapter it puts the Frozen Teardrop prequel/sequel story to Wing in continuity by mentioning Treize Kushrenada having taken a bullet for Noin once, while placing Frozen Teardrop [[DisContinuityNod out of continuity]] ''in the same chapter'' by introducing Noin's parents as in line with her pre-Frozen Teardrop backstory. In the second chapter, many, many references are made to the episode "The Victoria Nightmare" and Noin recognizes the characteristics of Aries mobile suit's radar from memory (before her Taurus' computer can!), having been an Aries pilot for a long time.
[[/folder]]

[[folder:Music]]
* Occurs on a comedy album, of all things. Music/TheLonelyIsland's ''Incredibad'' opens with a song about [[ItMakesSenseInContext Carlos Santana's champagne brand]], which is referenced in the MemeticMutation-level ''[[http://www.youtube.com/watch?v=R7yfISlGLNU I'm on a Boat]]''.
** And again in the interlude ''Normal Guy''.
** At the end of ''Dick in a Box'', Andy and Justin Timberlake get sent to jail for indecent exposure. The video for ''Motherlover'' opens with them coming out of jail and dropping some boxes in the trash. Towards the end, Justin says, "This is the second-best idea that we've ever had!"
** During the bridge in ''Threw it on the Ground'', Andy talks about how there are "so many things to throw on the ground". One is a boiled goose, a reference to ''Boombox''.
* Music/MeatLoaf has the song "Blind as a Bat", with a title blatantly designed to remind of his great hit "Bat Out of Hell", even though the songs have nothing really to do with one another. (One might argue that this applies to the entire ''Bat Out of Hell'' "trilogy"...)
* Music/TheBeatles' "Glass Onion" actually approaches ContinuityPorn levels, referring directly to "Strawberry Fields Forever", "I Am the Walrus" ([[TheWalrusWasPaul with a twist]]), "Lady Madonna", "The Fool on the Hill", and "Fixing a Hole".
** "I Am The Walrus" itself contains the line, "See how they fly like ''[[WhatDoYouMeanItWasntMadeOnDrugs Lucy In The Sky]]''."
** And "Lady Madonna" references "I Am the Walrus" with the line "see how they run."
** During the fadeout on "All You Need Is Love", Paul starts to sing, "She loves you, yeah, yeah, yeah..."
** "If I Fell" has a subtler one: "'Cause I've been in love before, and I found that love was more than ''just holding hands''..."
** "Mean Mr. Mustard"'s sister is named ''Pam''. The followup song on ''Abbey Road'' is "Polythene Pam". The name originally read "Shirley", but John Lennon changed it to "Pam" to [[EnforcedTrope invoke this trope]].
** "Savoy Truffle" contains the line, "We all know 'Ob-la-di-bla-da', but can you tell me where you are", referencing "Ob-La-Di, Ob-La-Da" from [[Music/TheWhiteAlbum the same album]].
* The lyrics of the Music/{{Megadeth}} song "Victory" consist of [[SongOfSongTitles previous Megadeth song titles]] written in a PreviouslyOn form.
** They nodded to Sweating Bullets and its video with Mastermind ("slightly schizophrenic - me and me and me agree"), and also with Dread And The Fugitive Mind which is a similar song about the same thing.
*** Megadeth have numerous nods to Dave Mustaine's {{Metallica}} past starting with his own rendition of Mechanix on their first album "Killing Is My Business" (which was his original song Metallica rewrote as "The Four Horsemen" for Kill Em All), right up until "Don't Turn Your Back" on their (as of 2013) most recent album Super Collider. Of note amongst these is "Of Mice And Men" from 2004's The System Has Failed, which puts Mustaine's life story in context, no doubt inspired by his conversation with Lars in 2001 which eventually made it into Metallica's movie Some Kind Of Monster in 2004.
* ''Music/AxelRudiPell'' uses this trope very frequently.
** "Dark Waves of the Sea" features the exact chorus from "Oceans of Time" as an interlude, along with a similar melody overall.
** The title track of ''Mystica'' refers directly to previous songs and albums by title, such as ''Kings and Queens'', ''Oceans of Time'', and "Edge of the World", among many others.
* In 1996, R Kelly had a song featuring the Isley Brothers about a man cheating with "Mr. Biggs'" woman. In 2001, the Isley Brothers had a song featuring R Kelly concerning the same issue and the same characters. Or as Mr Biggs puts it, "Don't I know you from somewhere a long time ago?"
* Music/GeorgeClinton has a habit of recycling his older melodies in new contexts while making it seem more like creative fun than lack of originality. For example: The Funkadelic song "Red Hot Mama" borrows the melody from their older song "I Bet You", and the Parliament Song "Do That Stuff" takes a riff from "You Can't Miss What You Can't Measure" by Funkadelic.
** The Thompson Twins' "Love on Your Side" has the line "I've played you all my favorite records" followed by a short recap of the melody line from an earlier single of the band's "In the Name of Love" (They felt it was the only one they could legally use).
* Music/DavidBowie's "Ashes to Ashes" revisits the main character of "Space Oddity", Major Tom. The Major is also mentioned in the PetShopBoys remix of "Hallo Spaceboy".
* Music/BonJovi makes a nod to Tommy and Gina, the characters from "Livin' on a Prayer", in their song "It's my Life".
** "99 In The Shade", from ''Slippery When Wet'''s followup album ''New Jersey'', also name checks Tommy and Gina.
** "Wanted Dead Or Alive" from ''Slippery'' mentions "I'm a cowboy, on a steel horse I ride". "Ride Cowboy Ride" and "Stick To Your Guns" from ''New Jersey'' also mention cowboys, as (obviously) does Jon Bon Jovi's solo hit, "Blaze Of Glory" (from the ''[[YoungGuns Young Guns II]]'' soundtrack).
* Music/{{Queen}} have a b-side called 'Soul Brother' that's pretty much entirely continuity nods; "He's my best friend, he's my champion, and he will rock you, rock you, rock you"... it goes on like that.
* "Hey, Mr. DJ, I Thought You Said We Had A Deal" by Music/TheyMightBeGiants features numerous continuity nods to various TMBG in the third verse.
* Even classical music features the occasional Continuity Nod by composers to earlier works. Just to name a few examples:
** Creator/RobertSchumann's early piano suite ''Carnaval'' features, in the movement entitled "Florestan", a quote from his suite ''Papillons'', written two or three years earlier. The autograph manuscript (and most published editions) {{lampshade|Hanging}}s this by inserting the word "(Papillon?)" in the passage containing the quote.
** Music/DmitriShostakovich's String Quartet No.8 is something of an autobiographical work; as well as featuring innumerable quotes of his musical monogram (D E-flat C B = D Es C H (German note names) = D.Sch. = Д.Ш., Shostakovich's initials), it quotes the opening bars of his Symphony No.1, the "Jewish" theme from the finale of his Piano Trio No.2, the opening bars of his Cello Concerto No.1, and an aria from his opera ''Lady Macbeth of the Mtsensk District'' among others.
** The String Quartet No.11 of Shostakovich's fellow countryman Nikolai Myaskovsky features quotes from numerous songs and piano pieces which Myaskovsky wrote earlier in his career; the quartet is sometimes subtitled "Reminiscences".
** The Russian Romantic composer Anton Rubinstein wrote three sonatas for violin and piano. The third sonata, written more than twenty years after the other sonatas, begins by alternating sustained notes in the piano with the opening phrases of the first and second sonatas in the violin before moving on to new material.
** In the aptly-titled "Four Last Songs", Richard Strauss included a musical quotation of his work ''Death and Transfiguration'', which he had composed sixty years earlier.
** Music/SergeiRachmaninoff published twenty-four preludes in his lifetime, one for each of the major and minor keys. The last to be written, Op.32 No.13 in D-flat major, contains a number of references to the first to be written, Op.3 No.2 in C-sharp minor (the relative minor of D-flat major), including several major-key quotes of the earlier prelude's three-note motif, a shortened version of the chord progression from the coda, and an ascending fifth in the final measure.
* Creator/GilbertAndSullivan indulged in this on a few occasions. In their seldom-performed penultimate collaboration, ''Theatre/UtopiaLimited'', a nod is made to ''Theatre/HMSPinafore'' as one of the British Flowers of Progress is a naval officer named Captain Corcoran - which is also the name of the captain of the ''Pinafore'' ([[ItMakesSenseInContext for most of the operetta, at least]]). In his introductory song in the Act I finale of ''Utopia Limited'', there is even a direct musical quote from the similarly named character's introductory song in ''HMS Pinafore'', "I am the captain of the ''Pinafore''". It is somewhat uncertain whether they are intended to be the same character.
** ''Utopia Limited'' also has a nod to ''Theatre/TheMikado'', specifically the title character's song about his {{Cool And Unusual Punishment}}s:
--->'''King Paramount:''' I am waiting until a punishment is discovered that will exactly meet the enormity of the case. I am in constant communication with the Mikado of Japan, who is a leading authority on such points.
* Secondhand Serenade creator John Vesely references the chorus of his song "Your Call" in the first verse of the prior track, "Vulnerable" and even {{lampshade|Hanging}}s it, saying "...Isn't that a song already? I get a B in originality."
* The Music/RedHotChiliPeppers make references to a girl called Dani in the songs "Californication", "By the Way", and "Dani California".
* In Music/{{Usher}}'s music video for "Hey Daddy (Daddy's Home)" there are scenes with a group of female back-up dancers rehearsing. His following video "OMG" brings back the same dancers in full costume performing the rehearsed moves.
* The Music/FaithNoMore song "Last Cup Of Sorrow" features the lyric "Raise your glass and let's propose a toast to the thing that hurts you most," almost identical to a lyric in the song Bloody Mary from an early demo by FNM singer Mike Patton's first band, Mr. Bungle.
* Yusuke Nakamura occasionally does this with Music/AsianKungFuGeneration's album art.
** The wire on the cover of ''Houkai Amplifier'' connects to the string on ''Kimi Tsunagi Five M''.
** The guy on the cover of "Solanin" is wearing a ''Fanclub'' T-shirt.
** There's a doll dressed up as the girl on ''Sol-fa'' on the cover of "''Maigo Inu To Ame no'' Beat".
** There's a ''Houkai Amplifier'' CD on ''Magic Disk'''s album art. If you squint, you can tell that the boy on the cover has been replaced with Gotoh.
* "The Joker", title track of the 1973 album by the Music/SteveMillerBand: "Some people call me the ''Space Cowboy''[[note]] the seventh track on their 1969 album ''Brave New World''[[/note]], yeah / Some call me the ''Gangster of Love''[[note]] a cover of the Johnny "Guitar" Watson song of this name was the seventh track on their 1968 album ''Sailor''[[/note]] / Some people call me ''Maurice''[[note]] "Enter Maurice" was the second track on their 1972 album ''Recall the Beginning... A Journey from Eden''[[/note]]..."
** "Space Cowboy" did this as well, with its opening line: "I told you 'bout ''Livin' In The US of A''[[note]]"Living In The USA" was the fourth track on ''Sailor''[[/note]] / And you know that I'm a ''Gangster Of Love''..."
* In an interview, songwriter Dennis Linde said that the Earl whom the Music/DixieChicks kill off in "Goodbye Earl" is the same antagonist as in the much earlier "Queen of My Double Wide Trailer" by Sammy Kershaw. In the former song, Earl takes the narrator's woman off, and he takes her back.
* Music/ClintBlack's 1994 single "No Time to Kill" makes several callbacks to his 1989 single "Killin' Time".
* Music/KeithUrban did this with two songs in a row: "Put You in a Song" is a HeavyMeta about how he wants to write a song about his lover. "Without You" has the line "And up until you came along / No one ever heard my song / Now it's climbing with a bullet".
* Music/ZacBrownBand created a fictional character called "Floaty Boatwood" for the video to their tropical-themed "Toes". Floaty shows up again in the video for the similar "Knee Deep" (a Music/JimmyBuffett duet).
* KMFDM's "Oh Shit", the last track on ''Don't Blow Your Top'', reprises a lyric from the title track, as well as reprising the instrumental of "Oh Look".
* In 2010, country singer Lee Brice had a hit with "Love Like Crazy". A year later, he co-wrote the Eli Young Band's "Crazy Girl", which has the line "I love you like crazy, girl."
* In Fear and Faith's 2010 song "Bought The Ticket, Took The Ride" references their previous album Your World On Fire with the lyric "watch my world caught on fire!"
* Music/{{ACDC}} mentions the title tracks of their first two Australian albums, "T.N.T." and "High Voltage," in "Dirty Deeds Done Dirt Cheap."
* Music/{{Aerosmith}}'s "What It Takes" references "F.I.N.E." (which is on the same album) and "Heart's Done Time."
** Both "F.I.N.E." and "Intro" reference the outtake song "Right Key, Wrong Key Hole."
** "Amazing" contains the line "That one last shot's a [[CareerResurrection Permanent Vacation]]."
** The chorus of "Adam's Apple" includes the line "Lordy it was love at first bite." Twelve years later, "Dude (Looks Like a Lady" contained the line "She a long lost love at first bite."
* {{Ayreon}}'s 01 album is largely made up of continuity nods.
** Outside of the above album, the Forever character from Into the Electric Castle is revisited in a single song in Universal Migrator and is revealed at the end of The Human Equation.
* [[PanicAtTheDisco Panic! at the Disco]]'s music video for "The Ballad of Mona Lisa" begins with shots of dusty and cobweb-laden church pews--clearly the same setting from their first big hit, "I Write Sins Not Tragedies."
[[/folder]]

[[folder:Newspaper Comics]]
* In early ''Comicstrip/{{Dilbert}}'' strips, the now infamous PointyHairedBoss did not have pointy hair at all, but rather just an ordinary, receding hairline of black curly hair. A 1995 strip depicting the slow decline of Dilbert's health benefits, via a series of flashbacks, depicts the boss with his old, unpointy hair.
[[/folder]]

[[folder:Pinballs]]
* In ''TabletopGame/{{Monopoly}}'', every player starts with $1,500. [[Pinball/{{Monopoly}} The pinball adaptation]] translates this to each player having 1,500 points at the beginning of the game.
* Creator/WilliamsElectronics' "rollercoaster" game ''Pinball/{{Cyclone}},'' a sequel to ''Pinball/{{Comet}},'' includes the "Comet" in the game.
** ''Pinball/{{Hurricane}},'' the second sequel, also includes the "Comet" in the game. Furthermore, the backglass shows two riders wearing "Comet" and "Cyclone" T-shirts.
* The backglass for ''Pinball/TalesFromTheCrypt'' shows the Crypt Keeper reading an issue of the original ECComics' ''Tales from the Crypt'' comic book.
[[/folder]]

[[folder:Pro Wrestling]]
* Throughout the Wrestling/AttitudeEra, the WWF gave us a subtle Continuity Nod on a weekly basis, in the form of Wrestling/{{Chyna}}'s nickname, "The Ninth Wonder of the World". You may be saying, "Wait, aren't there only seven wonders?" Yes, but in the '70s and '80s, the WWF billed Wrestling/AndreTheGiant as "The Eighth Wonder of the World", and thus Chyna was next in line after him.
** And Wrestling/ZackRyder was in line after her, as he was recently called "The Tenth Wonder of the World".
* The WWF shows from October '99 to around August '00 paid a greater attention to continuity than usual thanks to the efforts of then head writer, the late Chris Kreski. Kreski made a habit of extensively storyboarding everything and keeping continuity charts. One specific continuity nod sticks out in a world where allegiances are constantly changing and old ones are often ignored. Shortly before Kreski took over, Summerslam '99 saw the climax of the feud between Wrestling/{{Test}} and Wrestling/{{Shane McMahon}} over Test deserving the love of Shane's sister Wrestling/StephanieMcMahon. Test won a "Love Her or Leave Her" match and the next night on Raw, Shane told him he was the better man and that they should be friends from then on. After Kreski took over, and even for a long time after Stephanie turned heel on her family and Test to marry Wrestling/TripleH, Test had Shane's back whenever he was needed.
* Subverted by WWE firing the continuity editor when he pointed out too many issues and never hiring a new one.
* These days, WWE doesn't tend to make Continuity Nods referring to incidents from more than half a decade ago (see FleetingDemographicRule). This tendency does not apply to appearances by or even casual mentions of Legends (WWE Superstars who are no longer with the company but are still widely remembered), who will often be referenced by younger commentators who weren't even ''born'' when they were in their heyday! One commentator casually mentioned Sky Low Low - a midget wrestler whom very few fans over the age of 40 are even aware existed!
** WWE either intentionally does this (such as HHH never referring to his loss to Wrestling/TheUndertaker at ''[=WrestleMania=] 17'' during promos for their fight at 27) or completely forgets about some stuff because they weren't important enough at the time. Wrestling/CMPunk reportedly had to remind the writers during his feud with Wrestling/RandyOrton that he was jumped by Orton and his stable in Unforgiven 2008, making him lose without even entering his title match, and thus giving him a pretty valid reason to go after Orton for Wrestlemania 27.
* Wrestling/{{Kane}} gives us one in the form of a delightful speech about his past while in an anger management class on the 8/27/12 edition of Raw. HilarityEnsues.
--> "I grew up locked in a basement, suffering severe psychological and emotional scarring when [[Wrestling/TheUndertaker my brother]] set my parents on fire. From there, I shifted around among a series of mental institutions until I was grown, at which point I buried my brother alive ... twice. Since then, I've set a couple of people on fire and abducted various co-workers. Oh, and I, uh, [[GroinAttack once electrocuted a man's testicles]]. Years ago, [[DiscontinuityNod I had a girlfriend named Katie]] but [[OldShame let's just say that didn't turn out too well]]. My real father is a guy named Wrestling/PaulBearer, who I recently trapped in a meat locker. I've been married, divorced, broke up my ex-wife's wedding and tombstoned the priest. And, for reasons never quite explained, I have an unhealthy obsession with torturing Pete Rose."
* In a world where most storylines disappear after [[ThreeMonthRule three months]], it took Wrestling/RandyOrton ''years'' to get over Wrestling/{{Evolution}}'s betrayal, a moment which is generally agreed to be his StartOfDarkness, transforming him from the suave "Legend Killer" to the cold and sadistic "Viper." This is evident because it became the standing reason for Randy's hatred of Wrestling/TripleH (and to a lesser extent, Wrestling/{{Batista}}), extending the grudge all the way to 2009, a full four years after the stable had long since dissolved. Evolution also left its mark on Randy in another ways, most notably in Randy's own PowerStable Legacy, an imitation of Evolution, except with Randy taking Triple H's place as The Centerpiece, in order to keep on a stranglehold on the WWE Championship, much like how Hunter did with Evolution and the World Heavyweight Championship. It's only in recent years that Randy has been able to get over it in order to ally himself with Wrestling/TheAuthority.
** This extends to Orton's relationship with other superstars. Besides the aforementioned Wrestling/CMPunk example, many of his former rivals make it no secret that they still hate him regardless of current alignments. This was most noticeable with Wrestling/JohnCena, whose feud with Randy was the most personal in recent years, arguably even more personal than Wrestling/TripleH's and Wrestling/ShawnMichaels circa '02-'04. Regardless of their alignments, anything that puts them in even the slightest bit of conflict pushes them to the verge of feuding again.
[[/folder]]

[[folder:Tabletop Games]]
* In both ''TabletopGame/WarhammerFantasy'' and ''TabletopGame/{{Warhammer 40000}}'', references are usually sprinkled around for fans to find referring to all manner of things from the previous editions that may have been forgotten about, passed over or [[CanonDiscontinuity deliberately retconned]]. For example, in the ''Grey Seer'' novel for WarhammerFantasy, Grey Seer Thanquol makes a passing mention to the "blasphemous Kweekul", referring to the 2nd edition "Realms of Chaos" sourcebooks, during the time of which Skaven were actually part of the Chaos forces, and specifically referring to a Skaven Daemon Prince used to highlight the "design a Chaos God" rules. Similarly, the 7th edition Warriors of Chaos sourcebook mentions Lothar Bubonicus and Werner Thunderfist, two Chaos Champions (Nurgle and Tzeentch respectively) who each ascended to Daemonhood. Both of them were warbands played by the writers of White Dwarf, and their progress was shown in issue #124.
[[/folder]]

[[folder:Theatre]]
* In TheDrowsyChaperone, the Man in Chair mentions that actress Ukulele Lil probably played the ukulele, "although she doesn't in this show." And then she does at the ''very end'', which is technically outside the ShowWithinAShow.
[[/folder]]

[[folder:Theme Parks]]
* During the line to get in ''The Simpsons Ride'' at Ride/UniversalStudios, various clips from ''WesternAnimation/TheSimpsons'' are shown on [=TV=]s. One of them is a clip of Doc Brown from ''Film/BackToTheFuture'' selling the rights to [[Ride/BackToTheFutureTheRide the time travel compound]] to Professor Frink.
[[/folder]]

[[folder:Visual Novels]]
* ''VisualNovel/ShikkokuNoSharnoth'' makes numerous passing references to ''VisualNovel/SekienNoInganock'' including mentioning the city of Inganock itself and a Runner known as David, who was a minor character there.
* [[VisualNovel/FateStayNight Kotomine]] remarks offhandedly about how Tohsaka will feel much better after being buried underground for a bit amidst a conversation that skims along the topic of [[{{Tsukihime}} vampires.]] Shirou isn't sure whether to take the comment literally or seriously. This little conversation gave rise to some EpilepticTrees suggesting that Tohsaka is the descent of a vampire.
* ''VisualNovel/{{Canvas 2}}'' has multiple references to the original game and several of the heroines, mostly in Misaki and Saya's routes. Both of them are sisters of heroines from the original.
* In ''VisualNovel/HatofulBoyfriend'' sequel ''Holiday Star'', the human girl is friends with The Conductor, implicitly from [[spoiler:all the bad ends]] in the previous game. She [[LampshadeHanging even says]] they've known each other [[NoFourthWall since the demo version!]]
[[/folder]]

[[folder:Web Animation]]
* ''WebAnimation/HomestarRunner'' has absolutely ''massive'' amounts of these. The most minor characters will pop up in various places, turns of phrase and vocabulary items will be thrown around in completely different contexts, objects from previous cartoons will make appearances elsewhere for little reason. At its greatest, a one-off joke will come back so much that it becomes a much larger part of the website, such as the band Limozeen. All you need to do is go to [[http://www.hrwiki.org/ the Homestar Runner Wiki]], find a cartoon's page and look at ''inside references'', where each Continuity Nod, ShoutOut, and MythologyGag will be documented in precise detail.
* [[http://www.roosterteeth.com/archive/episode.php?id=349 "Aw, shit. And I was in charge of confetti."]]
** When Grif somehow revived Sarge from a gunshot wound he was chastised for how random that treatment was and Sarge ask if he would have treated a shot in the foot by rubbing aloe vera on his neck. When Grif talks to Doc a while later, a (not very good) medic, Doc tells Grif that he made the right decision and states that he just treated Caboose's gunshot wound in the foot by rubbing aloe vera on his neck (then his toe fell off).
** A more recent one was in Recreation: Grif gets in the cockpit for a large vehicle and ask 'Why are there only four pedals if there's six directions?', the exact opposite of what Caboose asked when he first piloted his team's tank in season 1. There's been several per episode recently, though many are of the "blink and you'll miss it" variety.
** Taken UpToEleven in ''Machinima/RedVsBlue Revelations''.
* In ''WebAnimation/CharlieTheUnicorn 3'', having been through everything else the cartoon is going to throw at him, at least he finds that kidney they stole back in the first one.
* [[http://www.youtube.com/watch?v=YDDHHrt6l4w&feature=PlayList&p=B74E99AAF998D904&index=6 This fan work for]] ''Comicbook/{{Watchmen}}'' is ''filled'' with nods toward the original graphic novel, from Rorsachs' "love of animals" to the scene where the comedian falls out of a window.
* ''Machinima/TheLeetWorld'': In "Satisfaction Guaranteed", Player has something of an obsession with a snowman's hat. In the second season, the same hat can be seen in the intro sequence.
* In the ''VideoGame/DragonFable'' quest "The Risen", there's a nod toward the ''VideoGame/MechQuest'' side quest where you go to an old temple to look for fossils.
* In Website/BrainPOP's Fractions episode, many of the robots from other videos on the site, such as Little Jimmy and the Cycloids from the Capitalization video and the Hillbot from the Country Music video, show up at Moby's birthday party.
* ''WebVideo/UltraFastPony'': "Shameless Self Reference" is packed with references to prior episodes, complete with hyperlinks to the relevant episode. TheStinger from the season one finale references the first two episodes, with Night Moon Mare showing up from nowhere to deliver her CatchPhrase, "Saaaaaaaaaaaaand!"
[[/folder]]

[[folder:Web Comics]]
* ''Webcomic/GunnerkriggCourt'':
** In chapter 13, Kat disagrees with Alistair about which is Prodigy's best album, then Alistair gives all his possessions to Kat before he leaves. In chapter 14, Kat is seen wearing one of Ali's T-shirts. Then in chapter 15, she wears a shirt with the XL Recordings (Prodigy's record label) logo.
** In chapter 20, Annie accidentally [[DefaceOfTheMoon leaves a giant fingerprint on the moon]]. Whenever the moon is shown in the background in later chapters, this print is still visible.
* When they did a ''Manga/{{Bleach}}'' parody for ''Webcomic/VGCats'', Leo draws his Rat-Flail (an item he tried to make in a poor attempt at a ''D&D'' game by tying a rat to a stick), then turns it into an gigantic living Rat-Morningstar.
* ''Webcomic/TheAdventuresOfDrMcNinja'' has its share of these as well. Some even link to AltText comments -- one memorable one being the Doc's List of Things To Do Before He Died. Another being the peg-faced pirates, and Dan [=McNinja's=] 'poison eyes'...
* ''Webcomic/TheOrderOfTheStick'' has plenty of these, acting as both tiny details and important plot pieces throughout the course of the comic. The most significant of which being an elder dragon who happens to be the mother of a young adult dragon the main characters killed over ''400 strips earlier.''
** [[http://www.giantitp.com/comics/oots0456.html "Wait a minute,]] [[http://www.giantitp.com/comics/oots0486.html I had a 22!"]]
** In the cast page, Haley is now holding an IOU note after she [[http://www.giantitp.com/comics/oots0649.html stole the diamond off the cast page.]]
** "[[http://www.giantitp.com/comics/oots0665.html You're]] [[http://www.giantitp.com/comics/oots0025.html invisible]]!"
** And then there's the boots that Haley wanted dyed when she bought her new armor. [[http://www.giantitp.com/comics/oots0675.html Remember?]] Those ''[[http://www.giantitp.com/comics/oots0003.html lime green Boots of Speed]]'' she found and mentioned to V way back when as what seemed like a one-off gag?
** In [[http://www.giantitp.com/comics/oots0685.html strip #685]], Buggy Lou mentions that Belkar "was pals with one of [his] suppliers" during Lou's "stint . . . buying slaves over on the Northern Continent." This is a reference to [[http://www.giantitp.com/comics/oots0171.html strip #171]].
--->'''Belkar:''' The chick, we can sell into slavery. I know a guy who knows a guy.
** And a LampshadeHanging in [[http://www.giantitp.com/comics/oots0683.html strip #683]] about a reference from [[http://www.giantitp.com/comics/oots0087.html strip #87]]:
--->'''Vaarsuvius:''' You are a bottomless pit of self-reference, are you not?
** Rich just [[UpToEleven outdid himself]] in the [[http://www.giantitp.com/comics/oots0703.html 703rd strip]]:
--->'''Hobgoblin Mother:''' You clean that spill up this instant, Hobgoblin Cleric #2! I need to go change your brother, Hobgoblin Warrior from [[http://www.giantitp.com/comics/oots0433.html Strip #443, Panel 3.]]
* An [[ThisDomainIsIrrelevant untitled]] webcomic frequently makes use of this, frequently bringing up often inconsequential side points from older comics and twisting their meaning and often connecting them to all kinds of other events. Recently it has been [[http://thisdomainisirrelevant.net/592 revealed]] that this is all the machination of the {{Illuminati}} of which Creator/SteveJobs is a member.
* Read the AltText on [[http://www.xkcd.com/576/ comic 576]] of ''Webcomic/{{xkcd}}''. Now, go back and read [[http://xkcd.com/325/ comic 325]].
** Also in ''Webcomic/{{xkcd}}'', the [[http://xkcd.com/220/ super soaker]] ends up [[http://xkcd.com/517/ reappearing]] a while later.
--->"Man, I forgot that was there."
** Another AltText nod from ''Webcomic/{{xkcd}}'': AltText in [[http://www.xkcd.com/616/ #616]] referencing [[http://www.xkcd.com/150/ #150]]. There's also an AltText [[http://www.xkcd.com/368 reference]] to the [[http://www.xkcd.com/316/ elliptical reflector dish]].
* Appears a few times in ''Webcomic/SomethingPositive''. First is the reference to "I lava you," first seen on a note read by Davan and Nancy, and later repeated in a joke between Lisa and Gaspar.
** There's also the time when Aubrey and Kestrel entered a supply closet in the Nerdrotica building, where Aubrey stored some props from her less successful escapades. She is shown picking up a Cthulu mask, a reference to an earlier plot where she attempted to film a show called "My Neighbor Cthulu."
* [[http://www.brawlinthefamily.com/?p=978 One strip]] in a Christmas-themed arc in ''Webcomic/BrawlInTheFamily'', has [[VideoGame/{{Kirby}} King Dedede]] starting to go around stealing things set to a FilkSong from ''WesternAnimation/HowTheGrinchStoleChristmas''. Now, [[http://www.brawlinthefamily.com/?p=254 going back]] [[http://brawlinthefamily.keenspot.com/2008/12/24/117-htksc4/ a year]]...
** Matthew acknowledges that [[http://brawlinthefamily.keenspot.com/2012/05/10/408-resourcefulness/ this strip]] is notably darker than standard Brawl in the Family fare, but check out the Alt Text and it'll point you to [[http://brawlinthefamily.keenspot.com/2011/07/15/350-if-it-takes-a-lifetime/ this one]]. Then all kinds of FridgeHorror pops up.
* ''Unwinder's Tall Comics'' has a lot of these, sometimes resulting in ContinuityCreep. For example, [[http://tallcomics.com/?id=32 this comic]] references at least 5 different earlier strips.
* ''Webcomic/LifeAndDeath'' mentions the GargleBlaster [[NoodleIncident incident]] a few hundred pages [[http://www.drunkduck.com/Life_and_Death/index.php?p=698339 later.]]
* Many in ''Webcomic/TheInexplicableAdventuresOfBob,'' with references to the Lint Mines of Dustworld, Bob's bottomless sock drawer, Molly wanting a pony for her birthday, the Grammar Squirrel, Molly's ridiculous fanfic crossovers ''(Literature/TheBrothersKaramazov'' meet ''Literature/HaroldAndThePurpleCrayon,'' or ''[[Literature/GulliversTravels Gulliver]] vs. [[Franchise/{{Godzilla}} Mechagodzilla),]]'' etc.
* ''Webcomic/QuestionableContent'''s strip [[http://questionablecontent.net/view.php?comic=1707 1707]] has a continuity nod from perhaps as early as strip [[http://questionablecontent.net/view.php?comic=270 270]], as Jeff spontaneously decided to draw Faye, Penelope and Hannelore with their old hairstyles. The nod may be to an even earlier hairstyle, if you count when Faye wore her hair with clips in colours other than red.
* Made QUITE a few times in Triquetra Cats, which officially takes place in a probable alternate future of The Wotch, a short list includes the were creature jewel Wolfie and Katie use, (officially named in this timeline as the Samantha Stone, a reference to Samantha 'Wolfie' Wolfe) a descendant of Cassie Sinclaire named Circe, flashback panels showing Anne fighting Xaos, plus the plant that Cassie gives the love potion to is seen in a guest strip done by the Triquetra Cats team, this was later given a return nod in the Wotch where Glock mentions that "we need a full time force of people with expertise in mystical and scientific know how, and field agents prepped to deal with uncanny dangers, and entire SERVICE prepped to confront issues the public doesn't even believe in" in Triquetra Cats SERVICE is the name of the MIB type organization the main characters work for.
* In ''Webcomic/ElGoonishShive'', Grace's comment on ''Film/ThePrincessBride'' [[http://www.egscomics.com/?date=2011-04-01 here]] is a reference to Susan's opinion of it [[http://www.egscomics.com/?date=2010-05-07 here]].
* In Webcomic/ZokushoComics [[TheUndead Rotting]] [[ProfessionalKiller Johnny]] assassinates a mage who was throwing around some powerful destructive magics. In a later issue, the Wayward Cross gets hired in place of the the mage to take out a group of goblins that have taken over a fort. At the end of that, one of the things they came to get from the fort is taken by the people who hired the Wayward Cross, so there may be further implications.
* ''Webcomic/{{Homestuck}}'' is absolutely ''filled'' to the brim with in-jokes and references to past events. Often they become plot-relevant, but a lot are also just there for seasoned fans to pick out and to create a more cohesive work as a whole. (Andrew Hussie once claimed that there are very few pages that don't reference at least one other.) Strangely, there is actually an overriding plot reason for all of these, even the joke ones: circumstantial simultineity, in which similar events happen at the same paradox space time, is a real law of the Homestuck universe.
** To cite one of many, ''many'' examples, in Act 5 Act 1 Vriska complains to Aradia that she may as well rip her heart out of her chest with her super strong robot arm and pound away with it, because apparently it's up to her to feel emotions for the both of them. Later on, Aradia, in a robot body, does indeed rip her heart out and pound it against something. Much later in Act 6, the Autoresponder tells Jake that the brobot might as well rip its heart out of its chest with its super strong robot arm and pound away with it, because apparently it's up to the artificial intelligence to feel emotions for the both of them; later, it does indeed do this. There is absolutely no real meaning to these nods, but they're sure as hell fun to find.
* ''WebComic/DragonBallMultiverse'':
** The Multiverse aspect, especially for changed or alternate versions of the established DBZ cast, allows for callbacks or pokes to aspects of the series.
** The movies have been rewritten to fit within DBZ history. More irritatingly, aspects like Bardock's visions and the Tuffles were rewritten or removed from some universes.
[[/folder]]

[[folder:Web Original]]
* In an episode of ''WebVideo/ImAMarvelAndImADC'' it featured Franchise/{{Batman}} and ComicBook/IronMan trading barbs about each other's movies. At the end, Batman proclaimed that Iron Man has herpes. After a year, Jonah Hex and Iron Man were trading barbs about each other's movies.
--> '''Jonah:''' * cough* Herpes * cough*
--> '''Iron Man:''' What?!
[[/folder]]

[[folder:Real Life]]
* History Class.
* In international diplomacy, it's customary for world leaders, when visiting another country, to make references to long-forgotten ties between their nation and the host country. For instance, when visiting Morocco, US Presidents will usually make reference to the fact that in 1777, Morocco was the first nation to recognize America's independence from Britain.
* In 1890, the Turkish frigate Ertuğrul sank off the coast of Wakayama, Japan, after having an audience with Emperor Meiji. The surviving sailors were taken back to Istanbul by two Japanese frigates. In 1985, Turkey sent frigates to rescue 215 Japanese nationals who were living in Tehran at the time and endangered by the effects of the Iran-Iraq war. A statement released by the Turkish government mentioned it as returning the favor from 1890.
[[/folder]]
----