* HeyItsThatGuy: [[Series/TheWestWing CJ Cregg]] is Ms. Perky! [[TheSecretWorldOfAlexMack Alex Mack]] is Bianca! [[Disney/TreasurePlanet Jim Hawkins]] is Cameron! [[{{Series/Numb3rs}} Charlie Eppes]] is Michael! And, of course, [[Creator/HeathLedger the]] [[Film/TheDarkKnight Joker]] is Patrick!
** Hey, it's Tommy and Alissa from ''[[Series/ThirdRockFromTheSun 3rd Rock]]''! And they're ''still'' dating even though their names are different!
*** [[Film/GIJoeTheRiseOfCobra COOOOOBRAAAAA!!!!!]]
*** Wait a second, that's ''[[Film/{{Inception}} Arthur]]''?
** Bianca's BFF is head of [[Film/BringItOn the Clovers cheer squad]].
** From the series: [[CampRock Tess]] and [[Series/NedsDeclassifiedSchoolSurvivalGuide Moze]] are sisters and [[{{Series/Heroes}} Monica Dawson]] is the head cheerleader.
* OohMeAccentsSlipping: Ledger's accent is sort of half-Amercian, half-Australian. Possibly justified in-universe as he's revealed to be from Australia originally, but to have lived in America for more than a year prior to the film starting.
* ThrowItIn: Stiles's tears during the poetry reading scene were apparently unscripted, as was the brief shot of Ledger playing with the Bunsen burner near the opening of the film.
----