Let's face it, the daddy of all motion-controlled gaming is the humble art of air guitar. There's no question about it, creationists and evolutionists all agree, the genesis of our modern craze for motion sensitivity was your uncle rocking out to Jimmy Page's face-melting solo in Stairway to Heaven. Now that we've got the history lesson out of the way, someone's gone and programmed Kinect to recognize the fine craft of your air strumming and deliver concordant chords in response. Excellent!