Sweet. So, really, Picodrive replaced DrMDx as the better Mega Drive emulator, right? Good news that GnGeo allows multiplayer. The few times I actually hooked up my GP2X to a TV at a games store to showcase it, I used the brilliant SNK fighters, and most people asked if they could play, too.
Yeah, I have a TV-out cable, but didn't go for the 'brick' to hook it up to the wall, so the most play time I would get out of it was about an hour with fully charged, nifty batteries. I think it's a great idea to be able to dock it somewhere, and basically turn it into a powerful, emulating, home console. (God, I love this machine.)
About the GP2X Mk2, unfotunately, I have early-adopters' syndrome. I lucked out in the ways of overclocking, though, and can clock up quite high on my 'Mk1'.