[cageface]

I think touchscreens are going to become the cheap, ubiquitous, lowest-common-denominator interface for general tasks. But I agree that they're really not that interesting for anything more than browsing. You'll notice that most apps don't go far beyond basic tap, pan, swipe and pinch gestures because anything more complex is too awkward and error-prone. That leaves a lot of the expressive potential of the human hand untapped.