Gerard Butler was quite animated, making funny faces at the cameras, when he came for the premier of his new movie "Machine Gun Preacher". His new movie however, is anything but funny. "Machine Gun Preacher" is a true story about Sam Childers, a drug-dealer-turned-preacher-turned-rescuer-of-orphans in war-torn Sudan. Butler, during filming carried with him pictures of children mutilated by fighters who for two decades have raided villages in southern Sudan and worked on the project for one-thirtieth his normal rate on the film.