http://www.gbax.com/gp32review.html

But what a lot of people want the GP32 for is EMULATORS because its ARM CPU can be set upto around 133 - 160MHZ (compare that with the GBA's 14MHZ) its capable of running pretty much all the old classic consoles, even controversially the Gameboy, Gameboy color & Advance! Current emulators include SNES, Sega, NES, PC Engine, ZX Spectrum, Commodore, MSX, GBA etc etc. the older systems run perfectly including sound and they run at the CORRECT full resolution - the GP32 screen is easily big enough to do that.

The built in OS can play MP3 as standard, it can also play DIVX/avi/mpg files too if you install the player, making the GP32 a fantastic portable media player, I admit it my SMC has Simpson's, futurama and south park episodes on it!

that is fucking cool, I really want one aswell