Tim Huckaby at Internknowlogy just put this up. They have done several significant demos on Surface. Their Vitruview / Angiographer demo made us in the audience drop our collective jaws when they showed it at Microsoft. 3D manipulation on Surface has definitely got Sizzzzzle, but there are a bunch of usability issues. We'll be reviewing this content later and pointing out opportunities for improvement. In the mean time, GREAT work Interknowlogy. Enjoy!