PSY And MC Hammer “Gangnam Style” Performance At The AMA’s

Last night on the AMA's the biggest performance had to be BY FAR the Psy and MC Hammer performance of "Gangnam Style"! Nobody knew that MC Hammer was going to be joining in on the performance and when he did the crowd went NUTS! Some other performances included Justin Beiber, Carly Rae Jepsen, Kelly Clarkson and Taylor Swift.