Of course it's probably too early to say this with not much being shown about Windows 7, but Microsoft's (Steve Ballmers) plan to focus more on the UI for the next version of Windows seems ludicrous in my mind. I can think of a lot of other things I'd work on before trying to make it look *prettier* or introducing a touch screen...
Call me crazy but we've been using the mouse/keyboard combo for the last several decades for a reason. A touch screen doesn't have much practicality other than what's been shown in the videos. I'm not going to want to browse the web with a touch screen interface or do all my work on a touch screen interface. Going from a keyboard to a touch screen seems like a step backwards.