South Park creators Trey Parker and Matt Stone are hard at work as their first Broadway musical, The Book of Mormon, previews at the Eugene O'Neill Theatre. The hilarious duo took a break from their busy schedule to visit the Late Show With David Letterman to talk about their stage debut. While on Dave's couch, Trey and Matt also reflected on their 2000 Academy Awards appearance (they scored a Best Original Song nomination for the South Park movie's "Blame Canada") dressed in drag as Jennifer Lopez and Gwyneth Paltrow. Click below to find out how the pair relates the Oscar experience to current media cannonball Charlie Sheen!