NEW YORK, May 27 (UPI) -- Neil Patrick Harris, Michael Buble, Piers Morgan and Marlon Wayans will serve as guest judges on America's Got Talent this summer, NBC announced.
They will join resident panelists Howard Stern, Heidi Klum, Mel B and Howie Mandel to help determine which 36 acts will move on to the live performance shows at Radio City Music Hall in New York.