When I saw a buddy of mine try out this application, I just couldn't resist uploading my face and Alexander's face onto it and creating our own cute little elf dance. It certainly gave Francine and extra smile in her day - maybe because the our elf selves dance completely out of sync just like Alexander and I normally do.
It's fun. Check out our elf dance, then try it yourself. You can add up to four faces at the same time.
Seriously, go elf yourself - it's a hoot. (It'll take between 30 seconds and 1 minute to load, but it's worth it)