Simon Cowell gets emotional on "America's Got Talent" after a powerful performance by Nightbirde who also received the coveted golden buzzer.
Simon Cowell Pulls Terrifying Prank On Sofia Vergara During 'AGT'
ETCanada
Leave it to Simon Cowell to pull off a terrifying, yet hilarious prank on his fellow "America's Got Talent" judge, Sofia Vergara...
