I know the Gumstices (Score 2, Informative)

I did my final project with Gumstices, developing a complete user manual and they are incredible. You can have many kind of software running inside them and the connectivity is also awesome, USB-net, ethernet, bluetooth, wifi, and now gps (and probably more to come). We set up a JamVM to test Java and also C and C++ small programs. Was nice to work with those small pieces of hardware.