CLUB: Black Valentine's Masquerade brings together the peanut butter-and-chocolate tastes of Valentine's Day and Friday the 13th. SFBG reports that tonight's bash boasts "UK electro weirdo James Lavelle of UNKLE and DJ duo Evil 9" in a party that includes "shambling zombies, friendly demonic folk, blasts of electro-metal, and horror-movie synths."

10 pm // Mighty (119 Utah) // $15

THEATER: Alternahomo John Cameron Mitchell, creator of Hedwig and the Angry Inch / Short Bus, is in town hawking a new show. It's called "Origin of Love" and features Mitchell onstage singing some of his favorite hits. The post-gays seem to enjoy this man very much. Maybe you will too. (Runs through 2/14.)

8 pm // Victoria Theatre (2961 - 16th Street) // $25

FILM: Appropriately enough, te remake of Friday the 13th opens tonight, playing throughout the Bay Area. (And don't you dare hurt Dean, Jason!)