This post might seem a bit off topic but it’s not really.
Google is getting on the Kinect bandwagon with the introduction of spatial tracking technology into Gmail.
How it works
Gmail Motion uses your computer’s built-in webcam and Google’s patented spatial tracking technology to detect your movements and translate them into meaningful characters and commands. Movements are designed to be simple and intuitive for people of all skill levels.
More information is at this URL and in this video:
Wouldn’t it be cool if federated search apps could integrate movement technology so seamlessly!?