$100 laptop arrives

The $100 laptop is finally here. It's green, hand-cranked and has wifi. It was unveiled by MIT Chairman Nicholas Negroponte in Tunis earlier this week. It's positioned as a kids' laptop, especially for developing countries. It runs at about 500MHz.

Most of the software is going to be open-source, so the question is, what would you put on the laptop in order to do interesting mapping or GIS?

Update: The flurry of negative comments on ESRI support over in Spatially Adjusted has resulted in some interesting suggestions, namely that proprietry software should yield to open-source. Has ESRI atrophied due to lack of competition, and will open-source change that?