* HarsherInHindsight: Mr. Keating breaking down in tears after he discovers that [[spoiler: Neil killed himself]] has now just become a thousand times worse to watch now that Creator/RobinWilliams himself committed suicide.
** It also makes Mr. Keating's speeches about "carpe diem" and seizing the day before it's gone ''heartbreaking''.
* HoYay: Neil and Todd. It's virtual canon, to the point that most of the fanfiction circles on them.
* HilariousInHindsight:
** Neil does, in fact, [[Series/{{House}} end up as a doctor]].
** A [[RetroactiveRecognition young]] [[Series/TheGoodWife Will Gardner]] vying for the affection of a girl in a serious relationship with a popular guy. (Got somewhat HarsherInHindsight after [[spoiler:[[McLeaned Willís death]], by ''gunshot'', to boot]], in season 5.)
* ItWasHisSled: [[spoiler:Neil]]'s death.
* JerkassHasAPoint: Keating's antics don't go over well with the school administration and teachers. He has at least two conversations about this during the course of the film. While the audience is set up to believe their adherence to tradition and conformity are a bad thing, both conversations drive the point home. "Free thinkers at seventeen? Teach them to learn and the rest will follow." A prep school education is designed to send the young men on to college, and trying to be an artist will only end in disappointment.
* LauncherOfAThousandShips: Charlie is paired with nearly everyone in fanfiction, mostly under the logic that he probably wouldn't object.
* MemeticMutation: The "carpe diem" speech got a ''lot'' of play on Tumblr in the wake of Robin Williams' death.
** Not to mention "O, Captain! My Captain!"
* MoralEventHorizon:
** Neil's father [[spoiler:driving his son to suicide, albeit inadvertently]].
** Cameron was always TheFriendNobodyLikes but [[spoiler: selling out the whole club just to save his own skin?]]
* {{Narm}}: The BigNo is ruined by the slow motion and [[spoiler:Neil's father being played by Kurtwood Smith from ''That70sShow'']]. You can ''almost'' hear him screaming "[[spoiler: NEIL, YOU DUMBASS!!!]]"
** Well, [[HilariousInHindsight that last part wasn't exactly their fault]].
* TheWoobie: Both Neil and Todd.
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