Hey, got a few minutes? Here's something that might help pass the time. I don't know if you'd call this an "App" or not, but when you go to the "Elf Yourself website" you can make one of these dancing elf videos for yourself or your whole posse. Just have a decent looking picture of your face handy (Or someone else's).
These things are flying all over the Word Wide Web these days, so I thought I'd do one too. Check it out!