A dreadful "Let's Do It" by Joan Jett and Paul Westerberg is the only lame moment on the soundtrack of a flick that's destined to become the Rocky Horror of the '90s. The contemporary A list--Björk, Portishead, Belly, Veruca Salt, Hole and L7--all weigh in with new tracks; Björk's "Army of Me" and Portishead's "Roads" are standouts. "Season with Mockingbird Girl" by a Stone Temples Pilots spinoff called The Mad Bastards adds to the film's considerable hip quotient.