I dont know if you've seen this yet. I was blown away. I found it by accidentally navigating away from Thor's robot week post.
http://www.youtube.com/watch?v=3g-yrjh58ms -Dance!
http://www.youtube.com/watch?v=yFfw0RteVwA -Why!
http://getrobo.typepad.com/getrobo/2008/10/keepon-is-now-o.html -Buy! (well, if you have $30,000 laying around)
Those things are awesome. They're working on a toy version for a much lower price: http://wowstuff.co.uk/product/My-Keepon/96