Stage and screen vet John Stamos, who has a recurring role on the hit Fox series this season as a dentist vying with Will (Matthew Morrison) for the affections of Emma (Jayma Mays), is featured on "What Ever Happened to Saturday Night?" Lovebirds Finn and Rachel (Broadway baby Lea Michele and Cory Monteith), of course, are heard as Rocky Horror's innocent couple Brad and Janet, with Mercedes (Amber Riley) as Dr. Frank-N-Furter and Kurt (Chris Colfer) as Riff-Raff. Emma (Mays) takes the lead on "Touch-A, Touch-A, Touch-A, Touch Me."
"The Rocky Horror Glee Show" will air Oct. 26 at 8 PM ET on Fox. To get ready for the "Time Warp" and listen to the music, look below: