I remember buying a Wii just for the gesture control capabilities. I wrote a whole VJ performance app based on Wii gestures, so you could crossfade video and scrub through animations (the video equivalent of a DJ scratching records), just by waving your hands around. I toured with that thing for years... it was so essential to my performance that I stashed a few candles in my bag, so I could use them for IR tracking in case the sensor bar stopped working.
I then bought a Kinect and used it in a couple performances, projecting 3d mapped effects on to the band onstage. Even with VR/AR tech now: it starts with games but then gets co-opted into art and music. Open, hackable hardware is so important for society.