A couple weeks ago, the One Laptop Per Child XO-1 laptop arrived. I ordered it through the Give 1, Get 1 program while it was running since — because they evidently don't want to actually get money with which to help their program except via donations — it was the only way to acquire one.
It's a very interesting system with a strong and opinionated design behind it. I really like that in a lot of ways the OLPC organization is willing to re-think large aspects of the mouse, menus and windows human interface that's standard on modern operating systems for what they're doing. I also like that they're actually trying to apply the Taligent People, Places and Things ideas for collaborative interfaces across their entire system.
There are, however, a lot of rough edges, both to the software stack itself as well as to OLPC as an organization when it comes to actually delivering what they've created. They're working on it though, and I have a bunch of posts in the queue about various aspects of the OLPC software, what they've done right and what they need to fix. I'll be tagging them all "OLPC" so they're easy to find.