Rock stars would be jealous of art stars at YBCA openings, which draw overflow crowds of impeccably hip art groupies coat-checking their skateboards and shaggy faux furs to see live hip-hop by Mos Def, 1960s smut film festivals, spontaneous light shows set to the music of unrehearsed bands, and Vik Muniz' documentary on making art from trash. Most touring dance and jazz companies perform at YBCA's main theater (across the sidewalk from the gallery).