That would be Oreo the hamster, not the cookie. He just wanted to wish everyone a great 2010!
This lively pet hamster will keep you company throughout the day. Watch him run on his wheel, drink water, and eat the food you feed him by clicking your mouse. Click the center of the wheel to make him get back on it.
If you want a hamster of your own, just go to http://abowman.com/google-modules/hamster/