Should I get a Segway, an Xbox, or a Gamecube? 😉
Segway, without a doubt. The 3D graphics you see while riding one are darn near lifelike, and none of the available games are copy protected. Microsoft has a close competitor, but you can only ride it once before you have to re-register, and you have to give it a cookie before it'll even let you aboard.
Another drawback of the Redmond model is that everytime you think about going in a ceratin direction, a little dialog box pops up asking, "Are you sure you want to perform this operation?" As a doctor, I resent that.