Very interesting, and cool indeed.
And to think I posted today on my personal site about aspects of the tablet that hadn't met my expectations. This does - to a small degree.

Getting past the wow factor, as I understand it, only a few GUI apps are supported thus far. That makes me assume that for the upscaling of these apps that there is some UI convention that has not been passed to other applications so that they can (1) be uniform and (2) work with this new functionality. That part is fustrating. Its almost like most of the IT's development happens as a result of people wanting to bring order to a device of primeordeal ooze.

Still, its neat. And will be interesting to see how this comes out in 2.5 years (date guess from Texrat's saying that he presented this in '06 only for it to make an appearance now)...