A new piece of hardware for the GP2x is going to hit the known GP2x stores soon, the "GP2x Cradle" formerly known as BOB. Here is a illustration with full features and additional information: Read more about GP2x Cradle (GP2x misc)
Here is the latest REminiscence (Flashback) binary for GP2X. This version (v0.4) is the next public one after (v0.1) since v0.2 and v0.3 were private. Read more about Reminiscence v0.4 (GP2x misc)