Until we're all so dumbed down that all we can do is point at things on our shiny screens and grunt (yes I know we're pretty close, but we're not there yet), there is no way that touch screen desktops are ever going to have any practical use or purpose for 99 per cent of the people who use a Mac. It isn't going to happen. Period. Don't even think about it. Forget it, read some philosophy instead. Anything. Anything but think about touch screen desktops. They HAVE NO USE WHATSOEVER.
Wrong. Zooming in/out of images in photoshop like the browser on an iphone would be great.