Check out the handheld game console that I just ordered from the UK. It's called the Gamepark GP32. It is a USB color device that can emulate a wide variety of game systems including: NES, SNES, Sega, Spectrum, Aracde, MSX, GBC, NGP, and PCE.
I should have it early next week, so we'll see how it compares to the Game Boy Advance SP that I reviewed Monday. Don't worry, I'm not going to turn this into a gaming site, but hey, I just couldn't help myself!