The most regular appearing one is a shriek and minor-key organ variation of the jingle which follows some of the Halloween episodes.Once in a blue moon, the 20th Century Fox plate would also be affected, often as an extension of a Credits Gag. The Gracie Films Vanity Plate at the end of the episode sometimes undergoes a Logo Joke where it has different sound effects playing besides just the 'shh' and the little jingle that plays.Other gags are used occasionally during the ending credits: A list of the show's couch gags can be found and read here.(This was only used for the first production line using the HD opening.) The Simpsons' wall-mounted HDTV falls off the wall in some episodes, and does not in others.A billboard across the street from Springfield Elementary advertises something different each episode.Early on, when Bart ran over him, Barney would also sometimes exclaim something (such as 'BART!') instead of belching.When the head of the Jebediah Springfield statue falls on Ralph's head, he will usually make a muttering noise, but early in the gag's tenure he would actually say something, such as ' I see stars!' or 'It's dark!'.Something different flies in front of the Simpsons logo (but it's usually a three-eyed crow).

The HDTV opening introduced in season 20 introduced five additional couch gags:.(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 literal ' couch gag', the family gathering on the couch in a (usually) humorous animation.See here for a definitive guide to all Lisa's solos. Since the show's switch to High Definition, some episodes have featured Lisa playing another instrument such as a trumpet or violin (or, in one memorable instance, a theremin) instead. The solos are often recycled across several episodes - some were reused more often than the (in)famous 'chorus line' couch gag. Lisa plays a different solo on her saxophone.Bart writes something different in detention each episode.Sometimes they just skip straight to the driveway and do the couch gag, or some other abridged opening (see here for a definitive guide): The Simpsons is the Trope Namer for the Couch Gag trope, where the original opening sequence had several couch gags.

Best couch gags