04/09/2009 05:12 am ET Updated Dec 06, 2017

Obama Dancing At Ted Kennedy's Birthday Party (VIDEO)

The Obamas joined Ted Kennedy on Sunday night for a star-studded celebration of his 77th-birthday at the Kennedy Center. Bill Cosby emceed the event and Obama took to the stage to greet the performers and lead a chorus of "Happy Birthday". While he was in the President's box, Obama let loose a bit more and showed some of his signature dance moves. Check out the video below and see a slideshow from the event here.