New York, January 26 : Bill Gates was spotted partying hard at the Sundance Film Festival.

The billionaire shook his legs on a banquette during a performance by John Legend and the Roots at an after-hours party for Microsoft search engine at Film Lounge.

"He gyrated in a VIP booth until 2 a. m. Everybody was snapping photos of him until his security rushed him out the back door after he tipped a waitress 500 dollars," the New York Post quoted a source as saying.

Referring to Kristen Stewart, Gates apparently told the source that he wanted to look for "that chick from ''Twilight'' ."

He said: "I want to see her movie while I''m out here. I heard it was good." (ANI)