'America's Got Talent' Highlights

Host Nick Cannon is amazed by the contestants on season 4 of "America's Got Talent," but can they stick it out 'til the end? Here are the highlights from Wednesday's episode!

Hairo Torres' sick break dance moves:

Twenty-seven dancers from Lake Houston Performing Arts Center bring disco back:

Pam Martin and her pup Viva put on their boogie shoes for the judges: