Megan Fox and Amanda Seyfried
Movie: Jennifer's Body (2009)
The two main characters in the film are Jennifer (Fox) and Needy (Seyfried)—Megan Fox does her Angelina Jolie-lite sex bomb thing while Seyfried attempts to play a nerd. The two are best friends even though they have nothing in common. It's all extremely illogical until you take into account the fact that a) Seyfried's hotness cannot be negated by a pair of nerd glasses and b) they're not really best friends. No, they're repressed lesbians. Aha! Like a cold sore, this mutual longing flares up mightily; there's a very intense make-out scene, and then, just as suddenly, it's all over. The movie, which is really about cannibalism, human sacrifice, and the occult, chugs right along.