Conversation so far:
who has been a judge on america's got talent
Judges for America's' Got Talent include Piers Morgan, David Hasselhoff, Brandy Norwood, Sharon Osbourne, Howie Mandel, Howard Stern, Mel B, Heidi Klum, Simon Cowell, Julianne Hough, and Gabrielle Union
how many hosts has america's got talent had
America's' Got Talent has had five hosts: Regis Philbin, Jerry Springer, Nick Cannon, Tyra Banks, and Terry Crews.

Question: when did the show premiere
Self-contained rewrite: when did america's got talent premiere