Windows 7 has the much touted Touch Screen technology so users can simply launch programs etc by touching their VDU. Would this actually be a useful feature for you? Certainly from my own perspective it wouldn't be something I can see myself using very often. I don;t sit near enough to my monitors that touching the screen would be easier than using my mouse. Plus if you've ever had to use a public touch screen you know how fiddly and unresponsive they can be. It seems like Microsoft got obsessed by the idea without seeing how practical an addition to the O/S it would be.
What do you think the real next improvement is going to be in PC computing? Personally what I'd like to see more improvements in the handling of resources so that each new O/S seems to use twice the base resources as the last or at least a catering of the O/S to the kind of user. A stripped down, fast o/s for gamers and techies or feature rich for the home user who wants everything in one box.