It'll only work if you've got a Japanese PlayStation
Portable running on version 1.00 of the firmware (so don't even waste your time if you have a North American PSP),
but someone managed to get a Game Boy emulator running on Sony's new portable game console. They haven't figured out
how to get the sound part working, but it's probably only a matter of time until they sort that out.
[Via HelloGamer, thanks to everyone who sent this one in]