Like most red-blooded American males (and many masked Mexican wrestlers), you love a good cage match. Now, with these Robot Boxing Machines ($17,000), you can actually get into the cage, and fight your opponent from behind a crosshatch of steel. For a mere 17K, you and a friend (or beloved mortal enemy) can each climb into one of these blood-thirsty robots and let the wailing begin. Thumb-triggered buttons and two independent joysticks control the pneumatic-powered, tire-fisted arms, as you pound each other into oblivion. Hidden wheels are powered by a Honda gas engine, and let you travel up to 3mph for up to five hours of fighting. Or until one of you has to pee.