Cool... I guess. Personally, though, I can't stand playing anything with that directional pad & application buttons, so aside from having Nester for the hell of it, I usually don't bother with emulation on the PocketPC (or any other games I can't play with the Stylus). Considering the REAL GBA is way more comfortable, equally portable and full speed, I don't really see the point
Yes, I know these things usually have virtual pads as well, but that's almost worse...