How far away is Minority Report Type Interface? (Score 4, Interesting)

Just thinking about the minority report interface. This game interface isn't too far off from what I saw in minority report, it's a lot more than I has expected in terms of applicaitons I could use with my iSight. The only negative is that my arms tend to get sore very quickly; however, I still managed to land my parachute guy within 47Meters of the target. Overall its a very cool app. Shows a lot of promise with physical gestures and things like that in Interface usage.