The Book of Mormon Creators Trey Parker and Matt Stone on 'Charlie Sheening' at the Oscars
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 S…