The downside of touch devices is that my autonomic response is evolving to interact with every gadgets screen. I just tried swiping my finger across the screen of my 5G iPod.
I'll be glad when the family budget allows me to upgrade all of the iPods and my wife's phone to a touch screen. Maybe by then Citizen watch will have a touchscreen to replace those buttons on the side of my current model. I'm sure you can think of something that needs a touch screen. It might be interesting to play with one of those new iPads. Every time I've used a touch screen computer in the past I found it lacking the precision I desire. The precision that I'm used to from a mouse.