Christian Bale

The Machinist
Lost 62 lbs

Talk about dedication. This dude lost more weight than the director even wanted to play the paranoia and guilt-ridden lead, and tried to lose more before the producers stopped him! Then he had to gain it all back plus 40 pounds more for a little franchise reboot called Batman Begins. Bale has said that if the movie’s worth seeing he has no problem going through extreme changes—words backed up by his weight loss again for his Oscar-winning performance in last year’s The Fighter. So the real question is, would he have done it for Shaft?