Already a lot of negativity here... To me this looks amazing and although LEAP seem to be pushing for you to get rid of your mouse/keyboard, personally I think this is probably best as an addition to it. Imagine if you had one of these built into the keyboard. You're typing an email need to add a location switch over to google maps, hands off keyboard as you manipulate it around to get a decent resolution, 'tap' the…
Language is a powerful way to interact with systems. With the mouse, we got first a single primitive - point and click. That vocabulary expanded to drag, but still that's about it. With touch interfaces, we got swipe and pinch thrown in. The kinect expanded that with body gestures. Following that trend, it looks like leap vastly expands our visual interaction vocabulary, or at least has the potential to do that. Considering all the things human hands have made in history, it would indeed be a shame if our computers thought of us as one fingered two dimensional entities!