BLITZ(not be confused with Blitz Game Studios) released some hacks to use Kinect with Flash, Silverlight or Unity on their BLITZ Labs blog. It works by setting up a socket server using Node.js. Check the link below for a step-by-step walkthrough video...
http://labs.blitzagency.com/?p=2634
Tommy McClain
http://labs.blitzagency.com/?p=2634
Tommy McClain