Jay Greene, CNET:

"Consumers in the United States and 11 other countries can now buy Microsoft's Kinect motion-sensing game controller for Windows hardware.

In addition to acquiring the new Kinect, users also get a software development kit that allows them to create commercial programs that use the Kinect motion-sensing and voice-recognition controls. Microsoft expects companies to develop PC applications that take advantage of the device's natural user interface." (Gadgets, Kinect, Video)