(tinkerheavy.com) This is a demonstration of the Unity wrapper for OpenNI. My skeleton is tracked as I move in front of the Kinect. My feet are rigid-bodies that can kick the boxes. The boxes are also carryable if two hands interact with it simultaneously.
If you already have OpenNI+NITE working with your kinect, the binary for this project (pc and mac) is here: http://tinkerheavy.com/unityskeleton.zip
To get the others working you'll need to get OpenNI and NITE from OpenNI.org (to use the kinect get sensorkinect from https://github.com/avin2/SensorKinect instead of the openni.org sensor module)
The code and unity project are available on my git: