"Bill Gates’ Sun-Dance?: If you’re following Bill Gates on Twitter, then you know he’s at Sundance to check out “Waiting for Superman,” a film about the education system. “An amazing reception for ‘Waiting for Superman’ here at Sundance. not a dry eye in the house,” he tweeted. The businessman and philanthropist may have also found time to party. Drummer ?uestlove, the hip-hop bandleader for the talk show “Late Night with Jimmy Fallon,” wrote to Gates on Twitter: “Pleasure meeting you. Who knew you knew how to dance your arse off? lol” [Twitter]"