In this April 2012 photo released by NBC, host Nick Cannon, standing, poses with judges, seated from left, Howard Stern, Sharon Osbourne and Howie Mandel from the talent competition series "America's Got Talent," during auditions in Tampa, Fla. A prime-time display of artistic and athletic talent has carried NBC to the top of the television ratings. The Nielsen company says NBC was last week's most popular network. Three editions of "America's Got Talent" on Monday, Tuesday and Wednesday, June 25-27, were the three most-watched shows. (AP Photo/NBC, Virginia Sherwood)