Here's another Kinect mod from the "Why haven't they thought of that already?" file. This is a take on "human tetris", one of the premises of Fuji TV game show Tonneruzu, albeit without boat horns, chortling audiences, and a Japanese Chuck Barris as the host.
Simple concept: The screen sends a virtual wall at you, and you must mimic the pose in order for it to pass by safely. Those who made "Human Tetris" for Kinect say that the fail/pass determination is made by the percentage of pixels in the silhouette that fit within the cutout shape.
Human Tetris Kinect Game [Kinect Hacks]