- Simon Cowell (Self - Judge)
- Howie Mandel (Self - Judge)
- Sofía Vergara (Self - Judge)
- Mel B (Self - Judge)
- Terry Crews (Self - Host)
America's Got Talent — S4E21
Episode: Semifinals, Group 1
Air Date: 2009-09-01
Runtime: 85 min
Overview
The semifinals kick off with the first 10 acts from the Top 20 taking the stage.