The past few weeks without Glee have felt like an eternity, but now the show is headed back on the air! Season 4, Episode 15: "Girls (and Boys) on Film" airs on Thursday, March 7, at a special time of 9:30pm, and now the cast is here with a sneak peek of what to expect. We've already listened to all the songs from this movie-themed episode, and now we get a first look at some of the performances, as well. From the 500th musical number "Shout," to Kurt and Blaine's romantic "Come What May" duet, there is so much in store! Oh, and did we mention that the boys will be dancing around in their underwear during a Tom Cruise-inspired mashup number? Yeah. That's happening.