Actress Keira Knightley and musician Dave Matthews faced off against singer Michael Buble and the U.S. Tv host of Late Night With Jimmy Fallon during a game of musical charades on Monday night (03Dec12). Each team member picked the name of a song out of a hat and had 30 seconds to try and play the tune using a musical instrument. Fallon and Home hitmaker Buble, who was a surprise guest, emerged victorious.