Handheld Learning - learning with mobile and ubiquitous technologies

Wow!
http://www.openmoko.com/product.html

The Neo Freerunner (GTA02) is an updated version of Openmoko's earlier Neo 1973. As with the Neo 1973, which shipped last Fall, the Freerunner is billed as a completely open, hackable hardware platform, meaning that users are free to install and run new operating system firmware, for example in order to add native Linux software applications of their own choosing.

Aslo take a look at:
http://www.linuxdevices.com/news/NS9978560959.html