Description:Proceed with caution the next time you tell an actor to "break a leg." ET's Mark Steines brings you a list of celebs who have taken the showbiz phrase too literally. Earlier this week, Brooke Shields limped up the steps at the Metropolitan Museum of Art's Costume Institute Gala. With the aid of a cane, the actress told Nancy O'Dell, "When I was doing Addam's Family I tore my meniscus. I just got it fixed."(2:02)