FILM: Vigilante Vigilante, the documentary featuring Berkeley's infamous anti-graffiti cleaner-upper among others, will be at the Roxie for a couple more days. Ironically, the filmmakers have royally pissed off the city, whose crews have had to clean up dozens of wheat paste posters for the film throughout the city. (7 and 9 p.m., Roxie Theater, 3117 16th Street)

IMPROV: In preparation for the big Improv Festival, which opens on Thursday, Improv Everywhere is hosting an MP3 Experiment at Union Square. Read the instructions, which sound pretty complicated, to participate. (6:30 p.m., Union Square, Geary and Powell)

FOOD/LIT: This month's Feast of Words: A Literary Potluck, which is themed "Blue Ribbon," will feature New Orleans-based writer, artist, and musician, Kevin Simmonds, reading from his upcoming book Mad for Meat, and Chef Peter Jackson of Canvas Underground. (7 to 9 p.m., SOMArts Cultural Center, 934 Brannan Street)