I really appreciate this guy's efforts - but he had a ton of difficulty controlling Mario, which was to be expected. Once again, another reason why, although Kinect is kinda cool, it isn't the future of games. A part of the future of games, sure. But not the future in itself.
Look, the problem is with MOVEMENT. Why do most kinect games either have the computer control the movement of the character, or no movement at all? The reason is simple - running "on the spot" to move your character sucks, and steering a character via kinect is hard to do, without resorting to "stick your hands out to your side" style of game play.
Simply put, you can't play Gears of War with a Kinect properly. You can't. How could you? How can you dive, run, snap to cover, blind fire, active reload, with a Kinect? Honestly, some one tell me how, because I can't imagine playing it without buttons, and Kinect ain't got no buttons.
Whether it's the Wii, the Move or the Kinect, these motion controllers are only good for certain types of games. Indeed, the Kinect is the most limited out of all of them - at least the Move and the Wii have buttons to press.
Kinect is a great idea that came out maybe 3-5 years too early. It's GREAT that they took the risk and made it, because it will spur development into future motion controllers and gesture driven interfaces, which might turn out to be great. In the future. Not now.