Here is video of researcher Tobias Blum demonstrating an Augmented Reality overlay which, using Kinect, shows a simulated "X-ray" image of a skeletal system underneath. Now, it isn't Tobias' skeleton but based on a dataset called Visible Korean Human. The researcher suggests that such a tool might be used to teach anatomy.
I don't want to sound like a broken record about this Kinect stuff, so I'll just comment on how this is more than a little bit creepy to me. At first, everything is just kinda silly as he moves around and the skeleton moves in response. But when he started bending at the waist, I have to admit that I got a little case of the jibblies.