Magnifique.

Slashdot posts about the OLPC Human Interface Guidelines. They're incomplete, but just check out the keyboard map. Also, according to the blog post from which the Slashdot article was derived, there are aentirely new approaches to security and application access as well... The system uses SVG for graphics, and you can "view source" on any running application! Sweet. These guys are really putting some thought into this.