2009 teen comedy directed by Creator/ChrisColumbus and written by Larry Doyle from his own novel, in which high school geek Denis (Paul Rust) chooses his valedictorian speech to let the titular cheerleader, played by Creator/HaydenPanettiere, know his feelings. Even though she's gorgeous, popular and has a psycho army boyfriend. Later that day he and his best friend, having invited her and her friends around for a party, are surprised when they turn up. This isn't the only surprise fate has in store for Denis, since Beth isn't quite the girl he visualised...
!!This film includes examples of:

* AmbiguouslyBi/[[AmbiguouslyGay Gay]]: Everyone is certain Rich is gay, but he insists he's straight. By the end, he says he's bi, but it's still [[AmbiguouslyBi ambiguous]] because he doesn't show interest in women.
* BigDamnHeroes: Beth, when [[spoiler: she uses her DrivesLikeCrazy tendencies for good by [[TheCavalry driving an SUV through a wall of her psycho boyfriend's house]] to rescue Denis from getting beaten into paste by the guy.]]
* TheCheerleader: Beth Cooper.
* CowTipping: Rich, Cammy, and Treece come across a field of cows while drunk and decide to tip one of them. All three of them pushing together on the cow does not do anything other than starting a stampede that chases them out of the field.
-->'''Cammy''': Cows!\\
'''Treece''': Let's tip one.\\
'''Rich''': What, isn't that like an {{urban legend}}?
* DrivesLikeCrazy: Beth.
* IHaveBoobsYouMustObey: How Beth manages to persuade the convenience store owner to let Denis buy some beer despite his looking underage ([[DawsonCasting in-universe, anyway]]).
* LovableAlphaBitch: Beth.
* MaleGaze:
** When Denis falls head first into Beth's lap, he looks up her skirt and we see a POV shot of her panties.
** Toward the end, Beth's two girl friends try to prove Rich is gay by doing something that would turn on any straight boy: [[EroticEating licking a phallic pastry]]. The scene is shot to turn on the male viewers, of course.
* ManicPixieDreamGirl: Subverted. Beth turns out to be more grounded than it appears.
* TheMovieBuff: Rich, who constantly references all sorts of movies and thinks that everyone else is referencing them too even though they've just learned cliches through PopCulturalOsmosis.
* TheReasonYouSuckSpeech: Denis gives one to everyone in the senior class except Beth, including his best friend during his valedictorian speech.
* ShoutOut:
** Rich quotes a ton of movies
** Denis has a ''Franchise/StarWars'' poster. In the alternate ending, the character posing imitates the poster.
* StalkingIsLove: Played with for laughs. Denis stalks Beth, who gets freaked out, but she ultimately appreciates his love.
* ToplessnessFromTheBack: Beth in the girls' locker room, in front of Denis.