If you really want to ruin your holiday cheer, go see Bad Santa. Billy Bob Thornton plays an alcoholic, surly Santa Claus that works in a mall as a front to rob the store. With Tony Cox as his dimunitive sidekick and Lauren Tom as Cox's girlfriend, they case the mall as they work, treating kids as well as adults rudely. There are some funny moments in this extremely black comedy which would delight the your inner misanthrope. However, if you are of the type that has a quarter mile of christmas lights blazing and friendly plastic deer greeting people at your doorstep, go see Elf instead.