“Glee”‘s Matthew Morrison went shirtless for the show’s tribute to ‘The Rocky Horror Picture Show’ on Tuesday and he made some confessions about the episode to ET.”It was a great episode to do because I think our show is all about being an outcast, and I think that ‘Rocky Horror’ is a show for outcasts to go to,” Matthew said at the tribute to ‘The Rocky Horror Picture Show’ at the Wiltern Theatre in Los Angeles on Thursday.Matthew has a special connection to the story, having starred in a Broadway version of the production.Before shedding his shirt for “Glee”‘s tribute, the actor put himself on a diet to make sure he looked his best.”I just started eating better, because I eat like crap usually,” said Matthew. “A couple days before the actual shoot I went on a sweet potato diet where I just ate sweet potatoes.”Source