Check out these stylish little remote-controlled robots called Zibits. There are 12 different models with something to suit every taste -- from clunky-retro to sleek-modern. The robots have a super-simple control device that basically just puts them into a spin. Once you let go, the robot continues forward. Based on what I've read, this means that pretty much anyone can figure out how move these little bots.
It seems like they are more fun in numbers, so they offer a bunch of different Zibit 2-packs so you can race them, battle each other, or work together in this crazy track environment for designed Zibits (one Zibit robot included).
Here's where you can see all the various Zibits and associated periphenalia.