Unlike a regular television {{crossover}}, the Crossover Punchline is a brief gag. The Crossover is not vital to the storyline, it's just there for the fun of it. Used for laughs, it generally also uses the tropes AllJustADream or AlternateUniverse.
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!!Examples:

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[[folder: Anime ]]

* ''Anime/ProjectAKo'' featured a blink-and-you'll-miss-it gag at the end of the original OAV, where A-Ko's mother is seen sewing something that looked suspiciously like Franchise/{{Superman}}'s costume. The gag (that A-Ko is Superman and Franchise/WonderWoman's daughter) is made far more explicit in the Creator/AntarcticPress adaptation, where her parents refer to each other as "Clark" and "Diana."
* At one point in ''Anime/TheBigO'', Roger Smith (who's a noted Franchise/{{Batman}} {{Expy}}) is approached by a pair of reporters that look ''exactly'' like Lois Lane and Jimmy Olsen.
* There's a one shot manga by Creator/OsamuTezuka about a company testing a robot SalaryMan, who proceeds to [[GoingNative go native]] and become a union leader, while at the same time seducing every woman on the staff. After his creators have him assassinated it's revealed all the women in the company have (somehow) had his babies, which confuses the hell out of his best friend, who wonders "What does a robot baby look like, anyways?" Cut to a delivery room full of baby [[Manga/AstroBoy Astro Boys]].
* One episode of ''Anime/CowboyBebop'' ends with Spike ejecting a fridge with some kind of...[[ItCameFromTheFridge thing inside.]] In episode 8 of ''Anime/SpaceDandy'', Meow finds the fridge and eats the whatever-it-is.
* ''SayonaraZetsubouSensei's'' [[BrickJoke "Seven-year punchline"]], which started back in ''KatteniKaizo'' when a character is sealed behind a wall and doesn't appear again until Zetsubou, when she busts out and introduces herself.

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[[folder: Comic Books ]]

* An issue of the ''ComicBook/DarkwingDuck'' comic had Launchpad lament the lack of openings for pilot/sidekicks. We then cut to him insisting he can fly the [[WesternAnimation/ChipNDaleRescueRangers Rescue Rangers]]' plane. While holding it in his hand.
-->'''Gadget:''' No. No, you cannot.
* Didn't happen at the end, but the entire point for a ''Series/StarTrekTheOriginalSeries''/''ComicBook/{{X-Men}}'' crossover seemed to revolve around Nurse Chapel asking for Dr. [=McCoy=], to which both Bones and Beast turn and say "Yes?", then react with mutual surprise.
* One Marvel comic book featured DC's Death of the Endless at a party, saying she should leave before "that creep Thanos" shows up.
* During Walt Simonson's classic Thor run, when Thor was in his civilian identity he stumbled into two familiar-looking reporters named Clark and Lois.
* Similarly, when Voodoo and Spartan of the ''{{Wild CATs}}'' were vacationing, they were noticed by familiar-looking honeymooners named [[ComicBook/XMen Scott and Jean]]. Helping the gag is the fact that Jim Lee drew X-Men for years.

[[/folder]]

[[folder: Fan Works ]]

* [[spoiler:Despite already being a crossover,]] ''WebAnimation/DoubleRainboom'' has one of these: At the end of the video, where Rainbow Dash is writing her letter to Princess Celestia about why you should not take things that don't belong to you, Pinkie Pie asks "What will I do with this then?", pulling out [[WesternAnimation/FostersHomeForImaginaryFriends Bloo]] from {{hammerspace}}. The Foster's theme tune then plays as the video fades to the ending credits.
* [[http://fav.me/d1bwemo This]] ''WesternAnimation/EdEddNEddy'' fancomic features a surprise appearance of [[WesternAnimation/TheFairlyOddParents Denzel Crocker]] in the last panel, giving an F like he always does.

[[/folder]]

[[folder: Film ]]

* At the very end of the 1944 BobHope film ''The Princess and the Pirate'' Bob thinks he's won the girl, only for her to rush past him and into the arms of his [[RoadTo Road Picture]] co-star BingCrosby, who had not been in the picture heretofore.
* At the end of ''My Favorite Brunette'', Bob Hope's character is given a last-minute reprieve from execution; Crosby plays the very disappointed prison guard who was going to throw the switch on the electric chair.
* WaynesWorld. "[[{{Terminator}} Have you seen this boy?]]"

[[/folder]]

[[folder: Live Action TV ]]

* The epilogue of the series finale of ''{{Newhart}}'' had Bob Newhart waking up in bed on the set of ''TheBobNewhartShow'', next to his wife of the latter series, Suzanne Pleshette, explaining about his nightmare of being an innkeeper.
* The final show of ''Noel's House Party'' ended with Noel waking up on the set of his earlier show ''Swap Shop''.
* An episode of ''Series/CarolineInTheCity'' ends with Niles and Daphne of ''{{Frasier}}'' arguing over whether or not the most recent strip is funny.
* The ''{{Seinfeld}}'' episode "The Keys" ends with Kramer appearing on ''MurphyBrown''.
* After the credits of one episode of ''Series/MrShow'', a comic is seen talking to ''[[DrKatzProfessionalTherapist Dr. Katz]]''. Especially weird just because Mr Show is live-action.
* One Halloween episode of ''BoyMeetsWorld'' had a witch who wanted to sacrifice the guys in an occult ritual. At the end of the episode, they discuss the incident with another girl: ''Series/SabrinaTheTeenageWitch''.
* A Halloween episode of ''TwoGuysAGirlAndAPizzaPlace'' revealed the killer that had been going around offing the cast to be... Mimi from ''TheDrewCareyShow'', who said she wanted her own time slot.
* An episode of ''TheLucyShow'' had Lucy mistakenly drafted into the marines, driving her drill sergeant insane. When she finally is able to leave, the sergeant is relieved he'll never have to deal with someone as nutty as her ever again. Enter her replacement...[[TheAndyGriffithShow Gomer Pyle]].
* In an episode of the FamilyMatters, Richie has a friend over that says Carl "'''does''' look like the Dad from ''[[FreshPrinceOfBelAir Fresh Prince]]''!" During the credits, an outtake of this scene was shown. When Richie's friend says line ''this time'', James Avery enters to everyone's amusement.
* In the final episode of ''{{Coach}}'', Hayden and Christine find that Larry, Darryl, and Darryl from ''{{Newhart}}'' have been watching their cabin after they left for Orlando (not actually living inside the cabin, just watching it while they slept under it). This also doubles as an in-joke, because both shows were created by the same person (Barry Kemp).
* In an episode of ''Series/{{Chuck}}'', Big Mike turns out to be a cousin of [[Film/DieHard Sgt. Al Powell]].

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[[folder: Magazines ]]

* ''Magazine/{{Dragon}}'' comic strips:
** Annual #5 had all the artists on the regular comics switch places: ''Webcomic/DorkTower'' by Creator/PhilFoglio ended with the reveal that Bill was actually a disguised Dixie of ''Webcomic/WhatsNewWithPhilAndDixie'', while ''Webcomic/{{Nodwick}}'' by John Kovalic ended with the reveal that it was a DeepImmersionGaming session by the cast of ''Dork Tower'' (with [[{{Munchkin}} Igor]] as a decidedly {{OOC}} Nodwick). (''What's New?'' by Aaron Williams was a more conventional ''Nodwick'' crossover.)
** A later issue had a ''Nodwick'' story called "Epic For A Day", in which a mysterious helmet makes Yeagar temporarily epic-level ... until a portal opens and Phil removes the helmet, takes his derby from beneath it, and gives Yeagar a DopeSlap.

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[[folder: Newspaper Comics ]]

* The October 31, 2010 strip for ''{{BC}}'' has The Fat Broad running a pumpkin pie stand. The Cute Chick asks her where she found enough pumpkins to make the pies. The Fat Broad says that she just found one really big pumpkin. Cut to [[ComicStrip/{{Peanuts}} Linus, Sally, and Charlie Brown]] in a pumpkin patch with Charlie Brown saying "I don't think he's coming, dude."
* One of {{Garfield}}'s "I hate Mondays" gags was prompted by seeing [[{{Peanuts}} Snoopy]]'s reflection in the mirror.
* References to Family Circus characters are a RunningGag in PearlsBeforeSwine.
* 1997 was the year of the Great April Fools' Day Comics Switcheroonie, in which a number of comic strip writers and artists handled each other's strips as a massive practical joke. In several cases characters from different strips met, such as Garfield and Jon having their house painted and leaving to visit [[ComicStrip/{{Blondie}} the Bumsteads]].
* A WizardOfId strip features the Snowman character mauled by vicious snowmen. His reaction?
--> '''Snowman:''' How did [[ComicStrip/CalvinAndHobbes Calvin]] get in here?

[[/folder]]

[[folder: Video Games ]]

* ''VideoGame/TheSimpsonsGame'' has one of the last boss fights against MattGroening -- who attacks you with the main cast of ''WesternAnimation/{{Futurama}}''.
* Most of the endings of ''VideoGame/MarvelVsCapcom3'' and its ''Ultimate'' re-release features the Marvel characters interacting with Capcom characters (whether they appeared as playable characters [[TheCameo or not]]) and vice-versa. Highlights include ''VideoGame/ViewtifulJoe'' working on a film directed by Mojo and Spiral, Hulk storming the mansion setting of ''VideoGame/ResidentEvil1'' with Chris (and [[CurbStompBattle manhandling]] [[VideoGame/ResidentEvil3Nemesis Nemesis]]) and Mr. Fantastic recruiting Frank West to help infiltrate the ''ComicBook/MarvelZombies'' universe, among many others.

[[/folder]]

[[folder: Web Comics ]]

* The webcomic ''TheKAMics'' has done this [[http://www.theduckwebcomics.com/The_KAMics/4771842/ once]] or [[http://www.theduckwebcomics.com/The_KAMics/4815086/ twice]].
* The last page of ''[[http://tw-babiez.livejournal.com/17102.html Torchwood Babiez]]'' features Franchise/{{Batman}}.

[[/folder]]

[[folder: Web Original ]]

* One of the [[MultipleEndings six non-canon endings]] of the last episode of ''Machinima/RedVsBlue'' showed that the whole series was just an overly long Halo 2 multiplayer match.
* An episode of ''WebVideo/YuGiOhTheAbridgedSeries'' featured Ghost Nappa from ''WebVideo/DragonBallZAbridged'' appearing in the middle and the {{Stinger}}. A special episode revealed that Kaiba was [[spoiler: a robot built by Freiza and Mokuba's real father is Ghost Nappa.]]
* An episode of ''NarutoTheAbridgedSeries'' ended with the Hokage's funeral, and one of the character telling Konohamaru that he's in a better place. [[spoiler: We then see him crash-landing in front of [[WebVideo/DragonBallZAbridged King Yemma]].]]
** [[spoiler:Seems the Hokage wasn't the ''only'' outer Abridged Series character to be judged Yemma... Go and ask [[WebVideo/JoJosBizarreAdventureAbridged Abdul]]... On second thought, [[BerserkButton don't]].]]
* The episode of ''WebVideo/DragonBallZAbridged'' that abridged the entire first season of the abridged series (Yikes!) features Yami Yugi from ''WebVideo/YuGiOhTheAbridgedSeries'' watching the episode and pondering "[[SelfDeprecation This has...how many subscribers?]]"

[[/folder]]

[[folder: Western Animation ]]

* The epilogue of the ''TheGrimAdventuresOfBillyAndMandy'' episode "My Fair Mandy", wherein Mandy enters a child beauty pageant in order to show up her arch-rival Mindy, and is coached that she would win if she would simply smile. With great effort, Mandy begins to smile, and reality shatters, placing Billy, Mandy and Grim in Townsville as distorted [[WesternAnimation/ThePowerpuffGirls Powerpuff Girls]]. There were also several cameos from [[WesternAnimation/EvilConCarne Hector Con Carne]], of the show they shared a ThreeShorts show with, once saying, "I'm not even supposed to be on this stupid show anymore!"
** They once had a DreamWithinADream within a dream within a dream within WesternAnimation/FostersHomeForImaginaryFriends Wilt's head.
** In TheMovie ''Billy and Mandy's Big Boogey Adventure'', when they ask who's going to be the Grim Reaper now that Grim's job as reaper has been revoked, [[WesternAnimation/CodenameKidsNextDoor Numbuh 3]] shows up wielding the scythe, and her hoodie is now gray. The two shows did eventually crossover as ''The Grim Adventures of the Kids Next Door''.
*** Speaking of the crossover episode, when Billy made the mustard stain that kicked off the entire episode [[ItMakesSenseInContext and nearly destroyed all civilization as a result]], the KND weren't even the first call he made. No, he called ''WesternAnimation/EdEddNEddy'' first, who ''then'' directed him to the Kids Next Door.
* The ending of the ''{{Sealab 2021}}'' episode "Murphy Murph and the Feng Shui Bunch" revealed that the events of the episode were part of a video game being played by Meatwad and Master Shake of ''WesternAnimation/AquaTeenHungerForce''. ("You hang windchimes for an hour, and then you fight? I don't get it.") The "Bebop Cola" episode ends to reveal the entire cartoon was a proposed cola commercial being pitched to the company execs (one played by Murphy's voice actor, the late Harry Goz) by a pair of live-action salesmen.
* The ending of the ''WesternAnimation/FamilyGuy'' episode "Da Boom" has it be AllJustADream by Pam Ewing of ''Series/{{Dallas}}'', who finds her husband Bobby in the shower, in a parody of the famous [[TheReveal reveal]].
** In the fourth season, the main plot of one episode is a parody of ''Poltergeist'', which has Peter replicating the scene where he pulls the skin off his face while looking in the mirror, but when it all comes off, he has turned into [[WesternAnimation/KingOfTheHill Hank Hill]]:
--->'''Peter/Hank''': Hah Hah. Propane.
** On the fifth season finale "Meet The Quagmires", after Peter apparently fixes every problem from his screwing with the time-line, Roger the Alien from ''WesternAnimation/AmericanDad'' suddenly appears.
*** Then in "Lois Kills Stewie" (which was just a [[AllJustADream simulation]]) Stewie breaks into the CIA and is confronted by Bullock and Stan who Stewie mistakenly calls "Joe", lampshading how Stan [[ReusedCharacterDesign looks like Joe Swanson with black hair]].
** During a ''PoliceSquad'' spoof you get a JawsFirstPersonPerspective of Stewie running down [[WesternAnimation/TheSimpsons Homer Simpson]] as he parks in the garage.
-->'''Peter (looks down at Homer):''' Who the hell is that?
*** There's also an episode that has a miniature Marge appear at the bottom of the screen and at first, it seems like one of Fox's advertisements... until a miniature Quagmire attempts to rape her.
** In the episode "The Splendid Source", Peter and his friends are going around the country questioning people about where they heard a particular joke. At one point we see them asking "Bender from ''WesternAnimation/{{Futurama}}''".
** In one episode, the normally far left leaning Brian finds himself being swayed to the right wing views of [[InkSuitActor guest star]] RushLimbaugh, we switch to Ultra Conservative [[WesternAnimation/AmericanDad Stan Smith]] watching the episode saying "Good for you, Brian! Good for you!"
** At the end of the ''SpiesLikeUs'' parody episode a rocket wipes out [[WesternAnimation/TheClevelandShow Cleveland]]'s new home sending Cleveland in his bathtub crashing to the ground, a ''FamilyGuy'' running joke. Cue Tim the Bear to walk out a second later.
-->'''Tim''': I don't get it!
* [[WesternAnimation/TheSimpsons Homer Simpson]] appeared at the end of one episode of ''{{Duckman}}''.
* ''WesternAnimation/TheSimpsons'' has several examples:
** Although it doesn't occur at the end, the cameo appearance of the ''KingOfTheHill'' cast in the "Bart Star" episode of ''TheSimpsons'' probably qualifies. (Hank then proceeds to complain about the game not being worth driving 2000 miles for, if you look closely, Dale and Boomhauer can be seen in the stands as well.)
** As might the throwaway gag of the ''{{Archie}}'' gang throwing Homer out of a van and warning him to "stay out of Riverdale". He is later seen reading an Archie comic and muttering under his breath about "stuckup Riverdale punks"
** In a TreehouseOfHorror episode, Homer makes multiple clones of himself. [[WesternAnimation/FamilyGuy Peter Griffin]] can be seen [[TakeThat amongst the clones]].
** Similarly, in one episode the police have photos of several criminals wanted in Italy. Two of them are Peter Griffin (for plagiarism) and [[WesternAnimation/AmericanDad Stan Smith]] (for plagiarism of plagiarism).
** In another episode, Futuredrama, Bender from ''WesternAnimation/{{Futurama}}'' appears next to Bart and Homer after they travel through a time tunnel. Homer quickly proceeds to tell him to "get lost" and chucks him out of a moving vehicle.
*** [[WesternAnimation/{{Futurama}} Philip J. Fry]] also appears briefly in a couch gag.
** In one Treehouse of Horror wherein Homer travels through time, Kang and Kodos turn into Mr. Peabody and Sherman from ''RockyAndBullwinkle'' [[TemptingFate after saying that]] the PunyEarthling [[HypocriticalHumor was unprepared for the effects of time travel]]. Doubles as a BrickJoke because they were seen near the beginning of the short [[ItsBeenDone correcting Homer saying he was the first non-Brazilian person to travel through time.]]
** In one episode set in an insane asylum we see a number of the inmates... including [[WesternAnimation/TheCritic Jay Sherman]].
-->'''Jay Sherman''': [[CatchPhrase It stinks! It stinks! It stinks! It stinks!]]
-->'''Asylum Attendendant''': That's right, Mr Sherman. Everything stinks.
* One episode of ''WesternAnimation/{{Chowder}}'' has a character waiting for a blind date. In walks Sara Bellum from ''WesternAnimation/ThePowerpuffGirls'' -- but she's not his date.
* An episode of ''WesternAnimation/AmericanDad'' featured Stan name his top ten favorite fictional dogs. The #1 spot belongs to Brian from ''WesternAnimation/FamilyGuy'' who appears and doesn't know who Stan is.
-->'''Stan:''' [[TakeThat STOP PRETENDING I DON'T EXIST!]]
** In another episode Francine took an online pregnancy test from "Dr. Vadgers" which was considered a scam. The end of the episode shows Dr. Vadgers computer screen when he is then shown and revealed to be [[WesternAnimation/FamilyGuy Quagmire]].
** And, yet again, after the family's house is washed away in a hurricane it arrives next door to [[WesternAnimation/TheClevelandShow Cleveland's]]. At which point [[WesternAnimation/FamilyGuy Peter Griffin]] appears and shoots them both.
* At the end of ''WesternAnimation/FindingNemo'' we see [[WesternAnimation/MonstersInc Mike Wazowski]] swimming through the end credits.
* An episode of ''WesternAnimation/TimeSquad'' had Buck and Larry abandon Otto after a fight and try out several replacement orphans... including [[WesternAnimation/DextersLaboratory Dexter]], who protests he's not an orphan.
* ''WesternAnimation/HouseOfMouse'' had one in one of its episodes. With ''WesternAnimation/PepperAnn'' of all shows! But considering it's a MassiveMultiplayerCrossover, nine-tenths of the jokes are going to be this.
* A quick joke in a ''[[WesternAnimation/FostersHomeForImaginaryFriends Foster's]]'' episode shows [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Mandy]] returning an imaginary friend, saying it was too happy.
** The pilot also had an imaginary friend who was [[WesternAnimation/ThePowerpuffGirls Mojo Jojo]]; according to Wilt this is pretty common since "some kids aren't that creative, so they just copy what they see on TV."
* ''WesternAnimation/{{Animaniacs}}'' would occasionally cross the characters of its various shorts for a quick gag. A couple times, the Warners would be at a loss for how to deal with their current problem and eventually resort to recruiting another character: they took care of [[WesternAnimation/TinyToonAdventures Elmyra]] by heading for Mindy and Buttons' neighborhood and letting her fill Buttons' usual BadlyBatteredBabysitter duties; and for a lady with KarmicProtection as a genuine (if overbearingly) [[NiceGuy Nice Girl]] they hired Slappy Squirrel, who had no such scruples. In yet another short, it was revealed that the dragon they just beat was actually a machine controlled by WesternAnimation/PinkyAndTheBrain.
* In ''WesternAnimation/{{Ultimate Spider-Man}}'', the Living Laser is thrown into a dimensional rift, and comes out in the world of ''WesternAnimation/TheSuperHeroSquadShow'', getting promptly beaten up by SHS-Thor.
* An episode of ''WesternAnimation/RoadRovers'' had the villain being incarcerated in an insane asylum for megalomaniacs. The inmates end up yelling at each other from their cells about who is going to rule the world until at the end a familiar voice is heard...
-->'''[[WesternAnimation/PinkyAndTheBrain The Brain]]''': No, it is '''I''' who shall rule the world! YES! ''[the closing theme of PinkyAndTheBrain is heard as the episode fades to credits]''
* In an episode of ''WesternAnimation/Ben10Omniverse'' about a store that shifted between dimensions, when Ben first enters the store it's populated by alien versions of WesternAnimation/CowAndChicken.
* One episode of OggyAndTheCockroaches has Oggy and the cockroaches falling into toxic waste and turned to slime, and they enter a washing machine, which turns them into clothing, animals, then aliens... except that the "aliens" is clearly the titular characters of SpaceGoofs.
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