At first, Microsoft wanted to stop the re-purposing of their hardware and software, but soon realized that it was good for Microsoft. They have since offered a development kit for just such a use. And the new uses for Kinect have become exponential! So what is the trend amidst all of this activity? I believe that it will not take long for gesture technology to be standard with the purchase of a new laptop computer. It may have more than one webcam and perhaps a laser tracker, but it will be gesture sensitive. And, while moving around pieces and pictures on the screen will be commonplace, it will take a lot longer to parse out fine detail, such as words in a document. But, that too will come to pass.
For an opening window to what the Kinect can do, Hack A Day has 47 hacks and counting. Here. There are also several sites to search with just the words Kinect hacks. And as we all know, some gestures are better than others...