I don't usually stick my nose into hardware issues, but one of the themes of the talk I had with Microsoft's Tablet PC gang today was that the Tablet PC technology (high-resolution digitizing screen, ink, etc.) is moving into some really interesting form factors -- some smaller than traditional notebooks, some in "fixed mount" locations. I have this dream of something a lot like an architect's table that's all display.
This goes to one of my themes of the Tablet PC: it's an exciting form factor, it makes you think about new types of "things" to do with computers. (We got a little silly with this: we were shown a Tablet with built-in accelerometers and we were talking about rebooting by shaking it like an Etch-A-Sketch.)