TuioKinect tracks simple hand gestures using the Kinect controller and sends control data based on the TUIO protocol. This is a preliminary proof of concept implementation, which still needs several improvements to become fully usable. Nevertheless it should work out of the box with most TUIO client applications. You can download the source code and a mac binary from its page
The Therenect is a virtual Theremin, which defines two virtual antenna points that allow controlling the pitch and volume of a simple oscillator. The distance to these points can be controlled by freely moving the hand in three dimensions or by reshaping the hand, which allows gestures that should be quite similar to playing an actual Theremin.
Switch On The Code
Kinect getting started tutorial using libfreenect and the C# wrapper.
Demonstrates how to display the RBG data and depth data as a grayscale depth map.