Review: 'Zack and Miri Make a Porno'

High concepts often yield low results. A case in point: Kevin Smith's "Zack and Miri Make a Porno," in which Seth Rogen and Elizabeth Banks play platonic roomies who decide to make an adult film in order to pay the rent. You'll be shocked – shocked! – to discover that they actually love each other. The adult film reenactments are fairly gross and explicit and, worse, humorless. Rogen, usually seen in Judd Apatow movies, overdoes the scuzzball charm; Banks looks alternately titillated and embarrassed for herself. Grade: C- (Rated R on appeal for strong crude sexual content including dialogue, graphic nudity, and pervasive language.)