Lisa Ann Walter is an American actress and comedian, and television producer, best known as the creator and executive producer of Oxygen network reality weight-loss competition series, Dance Your Ass Off. Her other reality television work include her stint as a judge on ABC's reality television series The Next Best Thing: Who Is the Greatest Celebrity Impersonator?, and as winning a celebrity edition of the game show The Weakest Link. She also created and starred in the short-lived 1996–1997 sitcom, Life's Work, and appeared in such films as the 1998 version of The Parent Trap, Bruce Almighty, Shall We Dance, and War of the Worlds.