Tribute group METAL SKOOL amazed fans midway through their weekly Hollywood concert on Monday (01Oct07) - when they pulled ENTOURAGE actor Jeremy Piven out of the audience to play drums. The band spotted Piven in the crowd duirng their Key Club gig and decided to test his drumming skills. Piven took charge of the kit while Metal Skool ripped through a cover of AC DC's Back In Black. It's not the first time the colourful act have been joined onstage by a celebrity - Kelly Clarkson, Ryan Cabrera, basketball player Dennis Rodman, Pink and Juliette Lewis have been among the fans who have performed with the group.