Sporting an impressive 20 GB hard drive and weighing only 14 ounces, the OQO Model 01 is the world's smallest computer capable of running Windows XP. The screen slides to reveal an easy-to-use qwerty thumb keyboard, mouse buttons and TrackStik. Or you can conceal the keyboard and use the digital pen and scroll wheel instead. Features include a 1 GHz processor; 256 MB of RAM; built-in WiFi and Bluetooth; Firewire and USB ports; headphone jack. Dimensions: 4.9" x 3.4" x 0.9".