EyeToy-like games for the PC?  

Does such a thing exist, and work with USB webcams on a PC?

I don't want to buy a PS2 just for the Eyetoy...I mean, it is fun, but it would be cheaper just to get a USB webcam and a PC webcam game or two.

You guys must be couch potatoes with sour cream and green onions with bacon bits. :)