GLEE: The boys perform in the "Glease" episode of GLEE airing Thursday, Nov. 15 (9:00-10:00 PM ET/PT) on FOX. L-R: Jacob Artist, Blake Jenner (top), Cory Monteith (top C), Kevin McHale (bottom C), Samuel Larsen, Harry Shum Jr. and Chord Overstreet. ©2012 Fox Broadcasting Co. CR: Adam Rose/FOX