A nice, roomy place to see live music with a great dance floor, upstairs, a kitchen, a long bar, and convienent location. Here's some info directly from the website:

"12 Galaxies is located in the heart of the Mission District, on Mission St. between 21st & 22nd. The location is 2 blocks from the 24th St. BART station, on 3 MUNI bus lines, and has plenty of street and lot parking nearby.
12 Galaxies is available for private parties, corporate events, weddings or anything you can imagine. 12 Galaxies can hold groups up to 400 with two floors, two bars, and a state of the art sound system. We feature a kitchen that is fully equipped for banquet catering supported by our chef and our professional staff."