* {{Anvilicious}}: One of the all-too-rare successful aversions!
* EarWorm: The theme song... oh god THE THEME SONG!
** Say it with me: [[http://www.youtube.com/watch?v=aky72-gyLLI "Dance your cares away! *clap clap* Worry's for another day..."]]
** [[http://www.youtube.com/watch?v=yOJuWtqNIdI Now say it in French!]]
** [[http://www.youtube.com/watch?v=SJWttnistzk And then in German!]]
** [[http://www.youtube.com/watch?v=O_oWYQD7HjE And now in Japanese!]]
** [[http://www.youtube.com/watch?v=CTcBuYTb0x0 And in Norwegian!]]
** [[http://www.youtube.com/watch?v=LD83B_gsuWM And Danish!]]
** [[http://www.youtube.com/watch?v=6LLssAxDoS0 And don't forget Swedish!]]
** Have to mention the Doozer [[http://www.youtube.com/watch?v=262kfAoZmog song]].
* FridgeHorror: In "Marooned", Red and Boober are trapped in a cave-in and running out of air. They both quickly ''recognize the symptoms'' of this. Suddenly, living underground doesn't seem quite so charming and carefree...
* MagnumOpus: Combining music, puppetry, ethos, on an international level from the very start.
* {{Moe}}: Wembley. The other four main characters have their moments as well.
* NightmareFuel: The Terrible Tunnel. "Heidi!" ''"HOOOOOO-oooo...."''
** The Gorgs, to many a younger viewer.
* PeripheryDemographic: Indeed, many are the fans who like it even more as adults.
* SpecialEffectFailure: In "We Love You Wembley" there is a scene in the Gorgs' garden where Junior runs toward Mokey and Wembley. The camera moves a little to the right but the Fraggles (who were filmed separately via bluescreen) stay in place perfectly. Especially jarring since the bluescreening in the rest of the series was impressive for its day.
* {{Wangst}}: Gobo occasionally falls into this, mostly based on his status of de-facto leader of the gang. As early as the first season, he spends most of the Invisible Garboil episode in the depths of a HeroicBSOD!
** This is even parodied in the second-season episode "Wembley and the Great Race", where Wembley has a DreamSequence in which Gobo goes completely to pieces over losing a race.