You people really need to understand something. These people haven't hacked Kinect, and they're not going to. They'll never be able to make Kinect work on PC like it does on 360, because Kinect is a combination of the software in the machine, and the CPU in the 360. You have to have both. You're not going to see a situation where the system can be controlled on a PC like it can on the 360. You certainly won't be able to play games, because Microsoft won't allow it.
All they're doing here is capturing images from the cameras by writing some drivers. But you can't interact with it in the way it was designed.
I suspect Microsoft will include Kinect features in Windows 8 and future operating systems, and make it available at some point in the future.