Generation Iron is a 2013 documentary film which follows the world's leading bodybuilders as they train and compete for the coveted Mr. Olympia title. The film gives front row access to the lives of the top seven bodybuilders in the sport, including Phil Heath, Kai Greene, Branch Warren and Dennis Wolf. Mickey Rourke narrates the film, with appearances by Arnold Schwarzenegger, Lou Ferrigno and Jay Cutler.