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: Harry Shum Jr., Samuel Larsen, Chord Overstreet, Blake Jenner, Jacob Artist, Kevin McHale and Cory Monteith. ©2012 Fox Broadcasting Co. CR: Adam Rose/FOX