Howie Mandel is a Canadian comedian, actor, television host, and voice actor and is well known as host of the NBC game show "Deal or No Deal." Before his career as a game show host, Mandel was best known for his role as rowdy ER intern Dr. Wayne Fiscus on the NBC medical drama "St. Elsewhere." He is also well known for being the creator and star of the children's cartoon "Bobby's World." Mandel became a judge on NBC's "America's Got Talent," replacing David Hasselhoff, in the fifth season of the reality talent contest.