From Music Hack Day
 Kinect BeatWheel
Uses Kinect to control which beat is playing in a looping sample.
 About the hack
A sample is chopped up into eighth note slices (or any increment) and arranged like a clock face around you. The currently playing slice is controlled by your left hand's position in space. This allows you to remix a loop by waving your hand around. The red dot indicates your hand's position, the green bar indicates the currently playing slice, and the blue bar moves at the tempo of the song to serve as a guide.
 What APIs, tools or kit did you use?
Synapse for Kinect MaxMSP
 SF 2011 Hacks - the acting corps List of Hacks
Max patch and Mac executable.
Windows executable coming soon.
You'll also needed to run it.