Nick Cannon Joins Up All Night

Nick Cannon== THE GALA OPENING OF THE NEW MERCEDES-BENZ DEALERSHIP MANHATTAN == Mercedes Benz Dealership, NYC== June 21, 2011== ? Patrick McMullan== PHOTO - LEANDRO JUSTEN/ == Photo: Leandro Justen/?

Mr. Mariah Carey, Nick Cannon, is joining the cast of Up All Night in a recurring capacity, because apparently a show that stars Maya Rudolph, Christina Applegate, and Will Arnett needs to pad out its supporting cast, lest we spend too much time appreciating and enjoying these comedy all-stars. Applegate and Arnett play a couple adjusting to being parents, and Cannon's role comes about as part of the retooling of the show's setup: Applegate now plays a TV producer, while Rudolph plays a talk-show host, and Cannon plays her more energetic, more beloved sidekick. Jennifer Hall (who will always be the perky one from Unscripted) is also joining the show as Rudolph's insecure assistant. Fear not, fans of America's Got Talent: This new gig will not affect Cannon's hosting duties there. [TV Guide]