Music: --Rick James and the Stone City Band (lip-sync) - "Mary Jane," "Sexy Lady" and "Hollywood." --The Jacksons (music video) - "Blame It On The Boogie." --Devo (music videos) - "We Are Devo" and "Come Back Jonee." --David Johansen Group (music videos, live performances) - "Funky But Chic" and "Girls." --Santana (music videos, live performances) - "Well All Right," "Open Invitation" and "One Chain (Don't Make No Prison)." --The Disco Dance Dimensions (dance troupe, series regulars) - perform to Sarah Dash's record "Sinner Man." Comedy: --Bobby Kelton (stand-up comedian)