USB Whack looks like a top notch game. A lot of USB devices such as the USB grill tend to be cool, but would never actually be used. This whack attack game is the latest that could become addictive. It works just like in the arcades where you have to hit the critters as they light up. Two modes are available which are 30 second or 60 second games. It also features a tiny LED scoreboard too. I do not know if it tracks scores on the PC. That would make it cooler.
It costs $14.99 from Gadget Box.