http://www.microsoft.com/surface/

http://www.engadget.com/2009/06/03/video-sonys-ps3-motion-controller-in-action/

Having Surface functionality combined with Natal... Interesting days...  I think I am mostly impressed with Natal because it actually looks like the first real step forward in human interaction, where Surface on its own feels more like a gimmick with limited uses, and then only when someone has the money to burn on Surface's requirements.

Project Natal Ricochet Live Stage Demo

Project Natal Splat Live Stage Demo 

Project Milo (Lionhead Studios) using Project Natal (Gets interesting around40% in)