a great deal on the Xbox Kinect by far the best price I've seen, I mean today I saw second hand ones selling for £117.99 at Gamestation, when you can get a new one from Tesco for £99.99:

Microsoft Xbox 360 Kinect & Kinect Adventures - Tesco.Direct

about the Xbox 360 Kinect:
You are the controller. Kinect uses a sensor to track your body movement and recognise your face, even listen to your voice. Smart enough to remember voices and faces and provides an in-game experience in which the player’s face and voice are recognised. Greet and speak to characters in the game, or simply step into view of the sensor to log into Xbox LIVE and connect with friends.