This crude comedy produced by the Farrelly Brothers (but written and directed by less talented folks) tries really hard to capture the shocking comic anarchy of There's Something About Mary. It fails--but it's good for a few lowbrow laughs. Chris Klein (American Pie) stars as an affable bachelor who meets the girl of his dreams (Heather Graham, Boogie Nights), only to discover she's actually his sister. Enventually, he finds out she isn't his sister and tries to stop her from marrying another man. It's your usual romantic hijinks with a few incest jokes thrown in.