In the screenwriter's follow-up to Juno, Diablo Cody's 2009 Jennifer's Body is a horror comedy about a possessed high school student, portrayed by Megan Fox, who must feed on her male peers to sustain herself. Playing the straight-laced friend, Amanda Seyfried witnesses the situation get progressively worse until she is forced to intervene. In addition to Adam Brody's portrayal of a truly awful indie rocker, this one's got some pretty great lines, namely, "Hell is a teenage girl."