Psy & MC Hammer: 'Dick Clark's New Year's Rockin' Eve with Ryan Seacrest' Duo!

Psy and rapper MC Hammer bust a move while performing during Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2013 at Times Square on Monday (December 31) in New York City. After the performance, the 35-year-old Korean rapper tweeted, "How was #HammerTime in Time Square!??" PHOTOS: Check out the latest pics of Psy "Being