I would now like to direct you to two of my favorite online Christmas-themed animations that I am unable to embed here. Even though I work for the parent company, take my word for it that you'll enjoy The Garfield Christmas Advent Calendar. I had nothing do with it. It's very funny. I hope those two facts are not related. Give it a peek and also check back on Christmas Day so you can view the whole thing.
And I have no idea who animated and devised it, but I somehow get a huge kick out of Santa's Deer, an ICQ animated greeting card. Go and start clicking and unclicking reindeer to see what happens.