Can you feel the Christmas spirit in your fingers, or maybe your toes? Bill Nighy is a fine actor, but his performance as the slightly skeezy, washed-out rock star Billy Mack in Love Actuallycrooning "Christmas Is All Round" is one that we'll never forget. And besides Billy Mack, we can't forget other musical moments in the movie like Laura Linney getting frisky to Norah Jones's "Turn Me On" or Emma Thompson getting her heart broken to Joni Mitchell's "Both Sides Now."