* DudeNotFunny: Authors Joel Eisner and David Krinsky criticized ''Diff'rent Strokes'' in the prologue of their book ''Television Comedy Series: A Guide to 153 TV Sitcoms in Syndication'', claiming that 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 hemorrhage, which could be termed as a FAM.
** 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.
** This isn't the first time Pearl the housekeeper's actress is on a show with a [[SpongebobSquarepants character named Pearl.]] She doesn't play the character in the latter show though.
* MemeticMutation: "Whatchoo talkin' 'bout, Willis?"
* NightmareFuel: [[http://www.youtube.com/watch?v=pHHe4zKdZuI&feature=related Mr. Horton]]. That is all. You will never watch ''[[Series/WKRPInCincinnati WKRP]]'' the same way again.
* 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 JustForFun/{{inherently funny word|s}} 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.
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