Gesture in GUI

I was watching the SkyOS demo in flash and noticed a gesture control box. It reminded me of Applicon usage of gesturing in their tablet based GUI interface (googling gesture and applicon brings up some old references). It's too bad that gesture isn't normal part of interfaces yet.

I had hoped to see it on tabletpc but it only has limited features and the only tool which seemed interesting (SmartGesture) doesn't seem to be supported anymore.

Now I just saw InkGesture touted at JKOnTheRun!