The Wiltern plays host to a star-studded tribute to "The Rocky Horror Picture Show" with Jack Nicholson, Danny DeVito, Billy Idol, "Glee's" Matthew Morrison and Lea Michele (plus many more) all slated to perform. Who'll don the Frank-N-Furter fishnets? It's anyone's guess, but we know for sure that it's all for a great cause: the Painted Turtle Summer Camp for children with chronic illnesses. The Wiltern, 3790 Wilshire Blvd. 8 p.m. Thur. $68-$121.50. http://www.livenation.com. (213) 388-1400.