Simon Cowell's 'America's Got Talent' first replacement judge officially announced
'America's Got Talent' reveals three acts advancing to Season 21 semi-finals
'America's Got Talent' judge Mel B hits Golden Buzzer for heavy metal rocker Nene Royal
'America's Got Talent' judge Simon Cowell to miss shows to undergo back surgery
'America's Got Talent' advances three acts to semifinals including dog act Olivia Befus
'America's Got Talent' judge Howie Mandel hits Golden Buzzer for magic act Hundred Fingers in quarterfinals
'America's Got Talent': Sofia Vergara uses final Golden Buzzer of Season 21 on Ukrainian aerialist
Terry Crews hits Golden Buzzer for trio of 'America's Got Talent' Vegas residency dancers
'America's Got Talent': Simon Cowell and Mel B hit second Golden Buzzers for inspiring acts
'America's Got Talent': Mel B hits Golden Buzzer for singing U.S. Army Sgt. Isaac Atkins
'America's Got Talent': Australian singer and magician act receive Golden Buzzers
'America's Got Talent': Three acts receive Golden Buzzers frustrating Sofia Vergara
Simon Cowell apologizes for "being a dick" on 'American Idol' for years
'America's Got Talent' crowns singer Jessica Sanchez its Season 20 champion
'America's Got Talent' decides its Season 20 finalists, including 'American Idol' alum Jessica Sanchez
'America's Got Talent': Birmingham Youth Choir, TT Boys and Zak Mirz advance
'America's Got Talent': Jessica Sanchez, Mastermind and Chris Turner advance
'America's Got Talent': Unreal Crew, Bay Melnick Virgolino and Leo High School Choir advance
'America's Got Talent' Results: Light Wire, Sirca Marea and Jourdan Blue advance to semifinals
'America's Got Talent's final Golden Buzzer awarded to Indian dance crew Unreal
'America's Got Talent': 'American Idol' alum Jessica Sanchez earns a Golden Buzzer
'America's Got Talent' judge Simon Cowell advances Birmingham choir with Golden Buzzer
'America's Got Talent': Tom Sandoval auditions as acrobats Duo Stardust land Golden Buzzer