* DudeNotFunny: Authors Joel Eisner and David Krinsky criticized the show in the prologue of their book "Television Comedy Series: A Guide to 153 TV Sitcoms in Syndication," claiming the show was inappropriately labeled a comedy despite its adult-themed storylines. Examples cited included "The Bus" (from Season 3, where the boys are threatened by racists hoping to stop busing as a way to integrate their new school) and "The Ski Weekend" (from season 4, where Kimberly considers having sex for the first time with a boy she had met during an unchaperoned ski trip).
* FunnyAneurysmMoment: ...
** TooSoon: A brain hemmorhage, which could be termed as a...
** The episode "Little Mother" where Kimberly's childhood friend learns she's pregnant involves a misunderstanding where the boys mistake Kimberly herself for pregnant. Several seasons later, Dana Plato was fired when the writers refused to incorporate her own pregnancy into the show.
* HilariousInHindsight: In a lot of episodes to get Arnold's attention they yell HeyArnold.
* MemeticMutation: "Whatchoo talkin' 'bout, Willis?"
* NightmareFuel: [[http://www.youtube.com/watch?v=pHHe4zKdZuI&feature=related Mr. Horton]]. That is all.
* UnfortunateImplications. Did the writers not know that "gooch" is slang for the perineum, a flap of skin between the anus and the scrotum? Or was it just an InherentlyFunnyWord in those halcyon days?
* ValuesDissonance: The whole premise of a couple inner-city black kids being "saved" by a kindly, paternalistic, rich old white guy may well provide this for some viewers.