Happy Days/YMMV


 * Ear Worm: C'mon, sing it with me: "Sunday, Monday, Happy Days...".
 * The Pumps Your Blood song.
 * Hey, It's That Voice!: Apparently Ralph Malph ends up stuck in The Realm working for Dungeon Master. Who knew?
 * The Scrappy: Chachi, but only after he got his own spinoff Chachi was always The Scrappy The Chachi. He was popular with the girls, but retroactively, amongst older fans? Please.
 * Seasonal Rot: It started out as a very cool, low-key show, then became the ideal version of a standard sitcom with a Studio Audience. It'd started getting worse (the Trope-Named Shark-Jump) even before Richie left, but got apocolyptically bad after that. Fonzie got a temporary full-time girlfriend for one season, and things got increasingly worse with gimmicks and nonsense until a thankfully fantastic final episode. Eleven total seasons, about four or five good.