David Hasselhoff, Piers Morgan and Brandy Norwood were the judges of the first season of "America's Got Talent," which premiered in 2006. Regis Philbin hosted the first season, but was replaced by Jerry Springer in Season Two. Sharon Osbourne replaced Brandy Norwood as one of the judges in Season Two.
As of the 2015, Howie Mandel, Howard Stern, Mel B and Heidi Klum are the judges of "America’s Got Talent." Nick Cannon replaced Jerry Springer as the host in Season Four in 2009 and continues to host the show as of 2015.
Piers Morgan remained a judge until the sixth season of the show. Sharon Osbourne remained the judge of the show until the seventh season.