I'd like to see multi-touch functionality outside of the Touchsmart apps (i.e. window sizing, image manipulation, google maps zooming & panning with finger touch, etc).

Windows 7 should provide a more general approach, right? As much as I love the way the Touchsmart apps look, they're sluggish, and take up a massive amount of system resources unless you set them to shut down when not in use.

Another cool application that I came across that isn't multi-touch, but is unique simulates variable width brush strokes using a paintbrush on the Touchsmart screen: http://www.davidbrebner.com/paint.html (that's from the CTO of Fingertapps).

Wouldn't it be cool to combine that functionality with something like Artrage or Corel Painter? Imagine being able to "paint" with realistic media on your Touchsmart screen. You can do it with your fingertip now, but the brush width detection seems like something I didn't think would be feasible, given the optical nature of the NextSindow system.