Cool Augmented Reality use in Facebook

I came across this strangely addictive Facebook app, called PopCam that uses augmented reality in a fun way: you catch popcorn in your mouth using your computer's camera. It's from a popcorn maker called Orville Redenbacker.

I like it not just because it's from a company named after a green duck that wished it could fly, but because its really simple, there are a couple of steps to play the game and because you don't need an AR tag on your for it to work - which IMHO was one of the barriers to take up.