Full episode: Summary: Episode Synopsis: The Top 10 acts perform in Hollywood in their quest to win a sought-after position in the final fourbr Tags:br America#39s Got Talent,acts,Episode,TV,NBC,episode,judges,TV Show,talent,Top 10,Auditions,Season 4,auditions,Las Vegas,contestants,Episode Guide,Season 1,Simon Cowell,TV Shows,Week 13