Last year, OfficeMax created the very fun Elf Yourself site where you could upload a picture of yourself and send off e-cards to friends of family of you dancing around like a silly elf. They've updated their site and now you can upload up to four faces. 

If you are feeling more 'humbug' than 'ho ho ho', OfficeMax has created another site, Scrooge Yourself, which is more suited for those who are grumps during the holiday season. 

Now there are two sites for your naughty and nice sides.


Update:
Also check out the Holiday Qee Maker!