well, i think "loopy" has a working SNES emulator running on the GBA. It's not very fast (in fact, it's quite slow) and there's no sound, but it's still impressive that it could be done. I guess with this new development, this will be a little easier for loopy. Loopy has already written LoopyNES and also PocketNES (a great NES emulator you can use on your GBA... with the right hardware of course). I can say from personal experience that PocketNES works GREAT. Haven't tried the SNES one though.. compatability reportedly still isn't great (well, last i read..).