Life & Style can reveal exclusively that Howie Mandel will join the cast of America's Got Talent as a judge for its fifth season! Howie, best known as the host of the game show Deal or No Deal, will be replacing David Hasselhoff, who announced his departure from the show this week. David, after hosting for four seasons, will be leaving the show to focus on creating his own TV show. Howie will join Piers Morgan and Sharon Osbourne to complete the panel of three judges.