Plen, created by Systec Akazawa, is a wee robot (stands 9" tall) that can balance itself on a mini skateboard or skate around on its own included roller skates. Plen's 18 joints can be programmed using your computer with included USB cable, or even with your cell phone using bluetooth. Plen can be commanded to do almost anything that you can imagine. Distributed by Plen Japan, it is currently available in the US for $2400. Runs for approximately 25 minutes on a single charge.