Using Kinect to detect where you are in a room so that your home automation can turn off the lights in the parts where you are not makes a lot of sense. Regular motion cameras can do this now, but Kinect can do this better, since it knows what constitutes a "person" and can adjust accordingly so you're not sitting in the dark for no good reason. [Nitrogen via Crunchgear]
this is a cool use! the thing I have a problem with current motion detection for lighting is that it's purely based on motion rather than an actual person. so a moving fan or a pet can trigger the lights to turn on. but if you have the kinect recognize that the dog is not a person, you don't need to turn on the lights.