Pin the Nose on Rudolph - Just like the donkey game but more festive!
White Elephant - A gift exchange with a fun twist.
Christmas Bingo - Make your own holiday bingo cards and don't forget the prizes!
Ornament Exchange - Not exactly a game, but a fun way for your guests to show off their creativity.
Christmas Stocking Guess Game - See if your guests can tell what's in the stocking. No peeking!
Christmas Carol Pictionary Relay - Hilarious game pits Christmas caroling teams against each other.
If those ideas don't work for you, try Christmas World or Kaboose Christmas Party Games for whole lists of great Christmas party game ideas.