Anyone elso own one of these? It's a retrogamers dream. For the uninitiated its a handheld portable gaming/media player that runs on linux. The bulk of the software available for it consists of ports of classic games that have had their source code released and emulators. I bought one last year and it is just superb, I have a 4gig SD card full of stuff like Mame, ScummVM, and emulators for Nes, Snes, Amiga, Megadrive and a ton of classic games like Doom, Quake, Duke Nukem 3d and Nethack. There is a very active community surrounding it with a lot of homebrew games too. The best thing it that with the exception of a couple of comercial games, everything is free (although you might need files from some of the original games).
The unit itself ships with full development tools so anyone is free to develop for it.
GP2X.co.uk official site - Buy the GP2X Linux console