WCW and WWE wrestling legend Ric Flair has joined the cast of the upcoming R-rated film dramedy ?Uncle Steamroller & Champion Rabbit,? in his what will be his feature-length movie debut. The film follows an Iraq war veteran who struggles to regain his pro heavyweight wrestling championship. The 'Nature Boy', who will also executive produce the movie, will play the president of the World Wrestling Union, a syndicate based in Las Vegas that owns the wrestling tour on which the main character attempts to stage his comeback.