Got this on release day and I was really disappointed. The game didnt track movement properly (perfect movements were not registered as correct and random flailing around registered good scores!), and sometimes the game would just randomly go into the pause menu without you asking it to.
Xbox support are unable to help as the software was not designed by Microsoft, and when I tried emailing the producers of the game they just directed me to the xbox support page about configuring your kinect (there is nothing wrong with my connect as Dance Central and Kinect Adventures work fine).
This review is confirmed by Official Xbox Magazine who give the game a 4/10. I recommend avoiding.