I just wrote up a review of the early GP2X and submitted it to GDNet, if it doesn't go up I'll put it here.
The GP2X is a pretty nifty machine. I fixed my battery issues; I had to get some 2500mAh rechargables though. Playing Monkey Island 2 in bed on a 3.5" LCD has never been so good :)
I've also started working on my GMGX->SDL port. I think it'll go along well, which means the GP2X will also have a potential new tool - as well as the PC.