* BestKnownForTheFanservice: Every film in the main franchise has at least one famous scene featuring female nudity.
** Nadia's changing/masturbation scene in ''American Pie''.
** The girl-on-girl teasing in ''American Pie 2''.
** Everybody really ''does'' remember the stripper(s) when it comes to ''American Wedding''.
** Jim trying to get a drunk, topless teenage girl back into her house without her parents finding out in ''American Reunion''.
* TheCatchPhraseCatchesOn: The term "MILF" existed long before ''American Pie'' came out, but the movie is the reason it entered everyone's vocabulary.
* CrazyAwesome: The Stifmeister!
** Dwight Stifler from ''Naked Mile'' and ''Beta House'' also counts.
* CrowningMusicOfAwesome: After two naffy cover versions in Wedding and two of the spinoffs, the series theme song "Laid" finally appears in the original James form for Reunion's end credits.
* EnsembleDarkhorse: Stifler went from being a minor antagonist in the first movie to one of the protagonists in the third.
** Jim's Dad, one of the definitive [[CoolOldGuy Cool Old Guys]] in cinema.
** Nadia as well.
** Stifler's Mom, to the point where the term "MILF" entered everyone's vocabulary, despite her having less than five minutes of screentime.
* FanPreferredCouple: Oz and Heather [[spoiler:who do in fact get back together at the end of Reunion]].
* FridgeLogic: Some of the scenes where guys cheer at naked Nadia on webcam don't really make sense when you consider the limited resolution and framerate on the feed.
** Makes more sense when you remember that back then, people had a lot more tolerance for dialup speeds. And a lot more imagination.
* FunnyAneurysmMoment: The webcam scene is a lot less humorous in light of what happened to [[http://en.wikipedia.org/wiki/Tyler_Clementi Tyler Clementi]] in 2010.
* GermansLoveDavidHasselhoff: Ironically, considering that the film has the word "American" in its title, ''American Reunion'' did pretty poorly in the US, not even managing to make back its budget, but earned the better part of $200 million outside of its home country.
* HilariousInHindsight: In ''Wedding'', Stifler (pretending to be a super-polite guy) says "I love old people". [[spoiler:This becomes literally true when he accidentally has sex with Jim's grandmother]].
* MemeticMutation[=/=]TheCatchPhraseCatchesOn:
** This movie gave the word "MILF" to the language.
** [[NoodleIncident This one time, at band camp]]...
* NeverLiveItDown:
** Jim's ahem, premature performance on webcam, which the entire school witnesses.
** Oz's run on Celebrity Dance-Off, where he lost to GilbertGottfried, and almost everyone that recognizes him in ''Reunion'' mentions.
* RetroactiveRecognition:
** One of the "MILF!" guys is JohnCho of later ''Film/HaroldAndKumarGoToWhiteCastle'' and ''Film/StarTrek'' fame.
** [[MadMen January Jones]] as Michelle's sister in the third film.
* {{Sequelitis}}: The DirectToVideo sequels.
* {{Squick}}:
** In the first movie, [[AllMenArePerverts Stifler, Kevin and Finch are all enraptured with the prospect of seeing their good friend Jim boinking Nadia on webcam]].
** That beer... Stifler usually gets the brunt of these.
** In the second movie, he gets pissed on from a balcony, and tastes it, thinking it is champagne.
** In the third movie, the ring scene.
** The fourth movie reverses this by having him take a shit in the JerkJock posse's beer cooler.
* StrawmanHasAPoint: In ''Reunion'' the guys promptly tell Stifler he's pretty much always been a horrible friend to them. Stifler snaps back they often don't treat him like a friend, and brings up the fact they pointedly ''didn't'' invite him to get together with them before the reunion. They reply they did so because they knew he would be, well, Stifler, but he makes a fair point.
* SuspiciouslySimilarSong: A version of the theme from ''Film/TheTerminator'' plays as Sherman's about to perform "Shermination". [[spoiler: In the second with Nadia, in the fourth with Loni Lipstein]].
* TastesLikeDiabetes: Stifler's over-the-top sugary sweet nice guy act in the 3rd movie.
* TheWoobie: Jim and Finch have their moments in the original: Jim for the webcam incident, and Finch for the LaxativePrank. Jim's prom night manages to be saved when he [[spoiler:loses his virginity to Michelle, who just happens to be his future wife]], and Finch [[spoiler:gets revenge on Stifler by banging his mother, and then going on to do it two more times in the sequels.]]
** Jim more so throughout the whole series. The poor guy can never catch a break.
** Sherman really did act like a jerk to the guys when he made it appear he slept with a girl before they did, but you have to feel sympathy for him in the sequel when he's still a virgin and discovers his Sherminator act doesn't work. [[spoiler:It's fixed at the end of the movie when he hooks up with Nadia.]]
** JerkassWoobie: Stifler in ''Reunion'' when the guys give him a [[TheReasonYouSuckSpeech Reason You Suck Speech]] by telling him he's trapped in the past because things will never be the way they were in high school, and that they didn't bother to catch up with him about the reunion because they knew Stifler would find a way to ruin it. Bonus points because Stifler was aware they were intentionally avoiding him the entire time, but acted like his normal self not to show it.
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