Starting November 12th you can get your hands on a XO laptop and give one to a child for $399.

For a brief time the Negroponte's One Laptop Per Child project is offering a two XO laptops for $399. If you order that package, you will receive on XO laptop and the organization will ship the other one to a child in need.
The small XO laptop runs Linux on a x86 CPU with 433Mhz. Other features include an ultra-bright 7.5 inch screen, WiFi, 1GB RAM and 1GB ROM.
There are no plans to offer the XO laptop in the U.S., so this Give 1 Get 1 promotion might be your only chance to get one in your hands. By taking this offer you are also doing something very good.

More details on the Xo Giving site. Via ZDNet.