From the PlanetXbox360.com feature article:
"There is no doubt that there are games that deserve a place at the top for being fun titles such as Wii Sports, Mario Galaxy but at the end of the day they stopped at being fun titles to play, the more serious titles did not meet expectations as the motion sensing didn't have the same effect with these titles an example of this was red steel where the point and shoot method grew old and was fairly slow and inaccurate. If there really is a place for motion sensing in console gaming there will have to be massive improvements made to current implementations for it to wipe off the stigma of being a novelty and MS look to be on the right track. The idea of having a 3D camera the main control for video games is one where many may be confused about but actually its very simple and extremely promising. Player's movements are picked up and certain aspects such as distance and position are picked up similar to that of vision camera or eye toy except there is now a perception of distance. There is no need for players to hold anything while playing games with a camera, which should save a few TV sets; is this the future of gaming?."