Microsoft / Windows - Project Origami - The Ultra-Mobile PC

The Ultra-Mobile PC is portable, lightweight, and configured to connect on the go. It's the device that you'll always want with you.

Featuring full Microsoft Windows XP functionality and the ability to touch, write, or type, the Ultra-Mobile PC is a powerful companion that lets you communicate, accomplish your tasks, and stay entertained and informed wherever life takes you.
http://www.microsoft.com/windowsxp/umpc/default.mspx