Why would you want one? It's all about the "digital ink." Anything you write on the LCD can be edited, colorized, cut-and-pasted, boldfaced, searched, converted to text, whatever. You quickly find that visual information-hand-drawn directions, for example-can coexist with text in ways never before possible. Also, sometimes a keyboard is inconvenient (in a car), impractical (grocery lists), or unacceptable (at a cafe). And since most Tablet PCs include wireless networking, they make dandy Web pads.