The PSP has a GBA emulator in it's homebrew scene.
I declare the PSP the winner and my reply in this topic as the best so far and everybody who disagrees with my statement sucks, lol.
Edit: the guy who just posted the exact same thing seconds before me, just didn't have such a well formulated sentence as me. He sucks.
PSN name: Gazz1979 (feel free to add me, but please put your Vgchartz name in the message!)
Battlefield 2: Gazz1979