[[caption-width-right:300:[[BatFamilyCrossover Bart Family Crossover]]]]
''WesternAnimation/TheSimpsons'' is the {{Trope Namer|s}} for the CouchGag trope, where the original opening sequence had several couch gags. Sometimes they just skip straight to the driveway and do the couch gag, or some other abridged opening:

* Bart [[WritingLines writes something different in detention]] each episode.
* Lisa plays a different solo on her saxophone. Since the show’s switch to HighDefinition, some episodes have featured Lisa playing another instrument such as a trumpet or violin instead.
* The literal ‘couch gag’, the family gathering on the couch in a (usually) humorous animation. (This is also the only gag that’s never cut in syndication, though many of the first episodes to be syndicated saw their original couch gags get replaced with the one where the Simpsons find an identical family already sitting on the couch.)
* The HDTV opening introduced in season 20 introduced ''five'' additional couch gags:
** Something different flies in front of the Simpsons logo (but it’s usually a three-eyed crow).
** When the head of the Jebediah Springfield statue falls on Ralph’s head, he will usually make a muttering noise, but sometimes he will actually say something, such as “[[CirclingBirdies I see stars!]]” or “It’s dark!”
** Early on, when Bart ran over him, Barney would also sometimes exclaim something (such as “BART!”) instead of belching.
** A billboard across the street from Springfield Elementary advertises something different each episode.
** The Simpsons’ wall-mounted HDTV falls off the wall in some episodes, and does not in others.

Other gags are used occasionally during the ending credits:
* The Gracie Films VanityPlate at the end of the episode sometimes undergoes a LogoJoke where it has different sound effects playing besides just the “shh” and the little jingle that plays.
** The most regular appearing one is a shriek and minor-key organ variation of the jingle which follows some of the {{Halloween episode}}s.
** A gunshot is inserted here for “Who Shot Mr. Burns? Part 1.”
** Another has Grandpa Simpson saying “Oh, sorry.”
** The fourth clip show has Snake angrily yelling at the shushing woman, “Don’t shush me!”
* The song or sound played during the credits may vary based on the theme of the preceding episode:
** Throughout the credits of “Bart Star,” Homer, drunk with power from [[TyrantTakesTheHelm being made Head Coach]] of the pee-wee football team, ‘cuts’ several people when their names showed up,[[note]]This is to say, everyone listed in the end credits except guest star Joe Namath.[[/note]] and when the woman does her shush he said “You’re cut too, Shushy!”
** Sometimes the closing theme is rendered in a different musical motif based on the theme of the episode (such as an ice rink organ after a hockey-themed one), or an instrumental performed by a ‘special musical guest’ (past bands to interpret the theme during the end credits include Music/{{NRBQ}}, Music/SonicYouth, Music/BraveCombo, Music/FallOutBoy and Music/YoLaTengo).
* The Halloween specials also generally feature gags within the credits, with puns on the names in the credits ([[Creator/MattGroening “Matt Groaning” or “Bat Groening”]] being almost inevitably featured).

For some episodes, the entire opening is changed:
* When the show was first put into syndication in 1994, many episodes from Seasons 1 to 5 used the couch gag from "Rosebud" (where the Simpsons find duplicates of themselves already on the couch). All episodes afterward usually retained their original couch gags.
* On the original airing of "Springfield Up", the opening sequence is cut (among other edits) in order to fill up time for the premiere of a new trailer for ''WesternAnimation/TheSimpsonsMovie''. Subsequent airings use the couch gag from "Ice Cream of Marge (with the Light Blue Hair)" (where the family are depicted as cockroaches).
* For the episode “He Loves to Fly and He D’ohs”, the first episode of the regular TV series following the release of ''WesternAnimation/TheSimpsonsMovie'', almost every element of the opening was changed to reflect events of the movie such as Springfield [[spoiler:in ruin]], [[spoiler:the silo]] still lashed to the top of Homer’s car, and Spider-Pig/Harry Plopper waiting for them on the couch.
* For the episode “To Surveil with Love”, the opening credits were completely replaced by an animated music video set to “[[{{Kesha}} TiK Tok]]”, though the gathering-on-the-couch gag still appears at the end.
* A live-action version of the sequence, originally made as a promo on British TV network Sky1 (which, perhaps not coincidentally, was also a [=NewsCorp=] property), was eventually used as an actual show opening on the season 17 episode “Homer Simpson, This is Your Wife”.
* Probably the most infamous of the couch gags was [[http://www.youtube.com/watch?v=DX1iplQQJTo the one]] for “[=MoneyBART=]”, storyboarded by subversive and [[TheFaceless reclusive]] street artist Creator/{{Banksy}}. It started with the typical intro (with ‘Banksy’ written over several billboards and walls, and Bart writing “I must not write on the walls”, all over the room) ending with all the Simpsons on the couch. [[CrossesTheLineTwice It then panned out to a stereotypical Korean sweatshop animating the show, with small barefoot children washing the cells in biohazardous material, kittens being ground up to stuff Bart Simpson plushies which are then carted off by a starving panda and packed in boxes sealed with the tongue of a dolphin head, and a person making Simpson DVDs by smashing out the center holes on the horn of a dying unicorn chained to a wall. Then the camera pans out to reveal]] [[BitingTheHandHumor the sweatshop being inside the 20th Century Fox logo, which has a decrepit, prison-esque look, finally panning out to the Simpsons’ TV.]]
* If an episode is too short, a very long couch gag will start to play to fill time. Three noticeable examples include one where the family performs a chorus line while the living room turns into a circus,[[note]]This one was used more than any other as a way of filling time, with a total of eight uses - and it still couldn’t fill enough broadcast time when “Cape Feare” aired, hence the famous half-minute of Sideshow Bob [[OverlyLongGag constantly stepping on rakes]].[[/note]] one where the camera zooms out of their house and into outer space and keeps going until it zooms out of Homer's head again, and one where Homer is seen evolving from a single-celled organism.

Sometimes the writers enjoy meta-humor about the blackboard gags.
* In the episode “Skinner’s Sense of Snow”, Bart complains that he’s written on the board so often that his wrist sounds like a cement mixer (and [[{{Squick}} rotates his wrist to prove his point]]).
* For “Thirty Minutes over Tokyo”, the 10th season finale, Bart writes “I'm so very tired.”
* For “The Parent Rap”, Bart writes “Nobody reads these anymore.”
* For “Bonfire of the Manatees”, Bart writes “Does any kid still do this anymore?”, as a reference to how WritingLines has gradually become a DiscreditedTrope.
* For “Sweet Seymour Skinner’s Baadaaaass Song,” the 100th episode, highly advertised by Fox, Bart writes “I will not celebrate [[MilestoneCelebration meaningless milestones]]”.[[note]]It isn’t the hundredth episode in ''production'' order, however; that honor goes to “Lisa’s Rival,” which aired in season 6. Neither “Lisa’s Rival” nor “Sweet Seymour Skinner’s Baadaaaass Song” make a big deal in-universe, during the contents of their episode, about hitting the century mark.[[/note]]
* In the opening for “Homer the Heretic,” Bart writes “I will not defame UsefulNotes/NewOrleans.” The previous episode, “A Streetcar Named Marge,” had featured a song about how horrible New Orleans was, in a spoof of the song from the musical ''Theatre/SweeneyToddTheDemonBarberOfFleetStreet''. Bart’s writing on the board was intended as an apology to those who were offended.
* Similarly, “Homer Scissorhands” had a guest star whose name was misspelled in the credits; the following episode, “500 Keys,” had Bart writing the correct spelling on the blackboard over and over.
* “Half-Decent Proposal” had “I will not bite the hand that feeds me Butterfingers.” Marge’s crusade against refined sugar in “Sweets and Sour Marge,” just two episodes earlier, sees Chief Wiggum disposing of the town’s supply of Butterfingers in a fire, only for the fire to reject them. “[[LampshadeHanging Not even the fire wants them]],” comments Wiggum. This was an inside joke about the show’s long history of ''Simpsons'' characters (particularly Bart) appearing in Butterfinger ads. This was written around the time the contract with Butterfinger ended; needless to say, the company did not offer to renew the contract.
* When Matt Groening announced that Springfield, Oregon was the inspiration for Springfield, that week’s episode (“Beware My Cheating Bart”) opened with the words “Now entering Oregon” next to the main title, while the chalkboard gag read “The true location of Springfield is in any state but yours.”
* ''WesternAnimation/TheSimpsonsMovie'' has Bart writing “I will not illegally download this movie.”
* In “Take My Life, Please,” the first HD episode, Bart writes “HDTV is worth every cent.”
* In “Barting Over,” we see Bart writing “I will not …” and then abruptly stopping before destroying the chalkboard with an axe.
* The 500th episode, “At Long Last Leave,” featured [[ButtMonkey Milhouse]] writing “Bart’s earned a day off” on the chalkboard while Bart smugly looked on.
* "Black-Eyed, Please" has Bart writing on a whiteboard in marker, the phrase being "Sorry I broke the blackboard."
* In "Four Regrettings and a Funeral", as a tribute to the late Marcia Wallace, Bart writes "We'll really miss you, Mrs. K." with a sad look on his face. [[TearJerker Grab the hankies]].
* In "Married to the Blob", Bart writes "Judas Priest is not death metal" on the chalkboard, a reference to the numerous internet complaints about that description of the band as such in the previous episode, "Steal This Episode".
* In "Trash of the Titans", where the eponymous Couch Gag would be, Homer, Marge, Lisa and Maggie end up running into Bart's classroom, where they find Bart writing, "I will not mess with the opening credits." (A similar gag was present in "[=MyPods=] and Boomsticks", except there, the setting was the living room, and Bart was writing, "I will not bring the chalkboard home.")

[[folder: Other Couch Gags of Note]]
This could take a while … maybe enough for a chorus line!
* Recent episodes now have had gags done by guest animators:
** "[=MoneyBART=]", by {{Creator/Banksy}}
** “Bart Stops to Smell the Roosevelts”, by Creator/JohnKricfalusi
** “Beware My Cheating Bart”, “Black-Eyed, Please” and "Married to the Blob", by Creator/BillPlympton.
** “The Fabulous Faker Boy”, by the ''WesternAnimation/RobotChicken'' staff.
** "Treehouse of Horror XXIV", by Creator/GuillermoDelToro
** "Diggs", by Sylvian Chomet
** "What To Expect When Bart is Expecting" by Michael Socha
* Many chalkboard gags satirize current or meta-related events in real life:
** “Two Cars in Every Garage and Three Eyes on Every Fish”: “It’s potato, not potatoe.”[[note]]Only used on a repeat airing on June 25, 1992, making fun of UsefulNotes/DanQuayle’s infamous ‘potatoe’ blunder.[[/note]]
** “Dead Putting Society”: “I am not a 32-year-old woman.”[[note]]NancyCartwright was 32 at the time[[/note]]
** “Homer the Heretic”: “I will not defame New Orleans.”[[note]]See above.[[/note]]
** “Homer’s Barbershop Quartet”: “I will never win an Emmy.”[[note]]This episode was the first after the 1992–93 Emmy nominations were announced and was the first time the show was eligible to be nominated for “Best Comedy” (which didn’t happen).[[/note]]
** “Secrets of a Successful Marriage”: “Five days is not too long to wait for a gun.”[[note]]The U.S. government had recently passed the highly controversial [[http://en.wikipedia.org/wiki/Brady_Handgun_Violence_Prevention_Act Brady Handgun Violence Prevention Act]], which required firearm buyers to hand over their money and wait five business days before they could receive their gun.[[/note]]
** “Lisa’s Sax”: “I no longer want my Creator/{{MTV}}.”[[note]]A TakeThat at MTV’s NetworkDecay.[[/note]]
** “The Trouble with Trillions”: “I will not demand what I’m worth.”[[note]]The show’s voice cast was in a heated argument with Fox executives over pay disputes.[[/note]]
** “Natural Born Kissers”: “I was not the inspiration for ‘Kramer’.”[[note]]This episode aired three days after ''Series/{{Seinfeld}}''’s series finale.[[/note]]
** “D’oh-in’ in the Wind”: “No one cares what my definition of ‘is’ is.”[[note]]This references BillClinton’s mush-quoted statement to the grand jury during the Lewinsky trial.[[/note]]
** “Mayored to the Mob”: “‘The President did it’ is not an excuse.”[[note]]This episode was the first aired after President Clinton’s impeachment.[[/note]]
** “Sunday, Cruddy Sunday”: “I will not do the Dirty Bird.”[[note]]The Dirty Bird was a victory dance done by the UsefulNotes/{{Atlanta}} Falcons during Super Bowl XXXIII.[[/note]]
** “Little Big Mom”: “I will not create art from dung.”[[note]]A reference to the controversial "The Holy Virgin Mary" painting in UsefulNotes/NewYorkCity, which was a painting of the Virgin Mary created with elephant dung.[[/note]]
** “A Tale of Two Springfields”: “I will not plant sublimin'''al''' messa'''gore'''s.”[[note]]During the 2000 presidential election, Republican ads were being ran that highlighted the word ‘rat’ in ‘Democrats.’[[/note]]
** “Lisa the Tree Hugger”: “I am not the acting President.”[[note]]The 2000 presidential election winner had not yet been decided.[[/note]]
** “New Kids on the Blecch”: “I will not buy a Presidential pardon.”[[note]]This aired when it had recently come to light that in his last two days in office, Bill Clinton issued a lot of presidential pardons, mostly to people who’d supported him.[[/note]]
** “Bye Bye Nerdie”: “I will not scare the Vice President.”[[note]]Dick Cheney was in the hospital with a heart condition.[[/note]]
** “She of Little Faith”: “I do not have a cereal named after me.”[[note]]At that time, Bart Simpson Peanut Butter Chocolate Crunch ''was'' being sold.[[/note]]
** “Half-Decent Proposal”: “I will not bite the hand that feeds me Butterfingers.”[[note]]See above[[/note]]
** “The Sweetest Apu”: “I will never lie about being cancelled again.”[[note]]A reference to a FlipFlopOfGod moment by Matt Groening about the fate of the series, at which his British interviewer freaked out.[[/note]]
** “Homer of Seville”: “The ''Wall Street Journal'' is better than ever.”[[note]]Now that RupertMurdoch owns it.[[/note]]
** “The Squirt and the Whale”: “''WesternAnimation/SouthPark''—we’d stand beside you if we weren’t so scared.”[[note]]The ''South Park'' episode “201” was heavily censored because of death threats from a Muslim extremist group, which led many to accuse Comedy Central of being cowards. Reruns have changed the joke to “Je ne suis pas français” (“I am not French”—itself a reference to the punitive line “Je ne parle pas français” in “Girls Just Want to Have Sums”).[[/note]]
** “Judge Me Tender”: “End of ''Series/{{Lost}}'': [[AllJustADream It was all the dog’s dream]]. Watch us.”[[note]]This aired the same night as the final episode of ''LOST''.[[/note]]
** “500 Keys”: “It’s Kristen Schaal, not Kristen Schall.”[[note]]A reference to a spelling mistake in the credits in “Homer Scissorhands.”[[/note]]
** “Replaceable You”: “It’s November 6th—how come we’re not airing a Halloween show?”[[note]]That year’s ''Treehouse of Horror'' episode seemed like the first to air in October for about a decade. As a matter of fact, that year’s ''Treehouse of Horror'' (the 22nd) was the second in three years to air in October; the 20th ''Treehouse of Horror'' aired on October 18, 2009, and ''was'' the first to air in October in a full decade (the 10th aired on October 31, 1999).[[/note]]
** ”Homer Goes to Prep School”: “I will obey [[AcademyAward Oscar®]] campaign rules from now on.”[[note]]The ''Simpsons'' theatrical short ''The Longest Daycare'' had been nominated for the Academy Award for Best Short Film; it lost to ''WesternAnimation/{{Paperman}}''.[[/note]]
** “Love is a Many-Splintered Thing”: “I was not nominated for ‘Best Spoken Swear Word’.”[[note]]This aired the night of the 2013 Grammy Awards.[[/note]]
** "Four Regrettings and a Funeral": "We'll really miss you Mrs. K."[[note]][[InMemoriam A tribute]] to Marcia Wallace, the longtime voice of Edna Krabappel. To emphasize the more serious nature of the message, the sentence is written only one time on the chalkboard and Bart has a more solemn facial expression.[[/note]]
** "Married to the Blob": "[[Music/JudasPriest Judas Priest]] is not [[DeathMetal death metal]]."[[note]]A reference to fan complaints about a joke in "Steal This Episode" where they were described as such.[[/note]]