Wohoo! Smartphones with touchscreen can run games properly!
Morphgear is an emulator platform for (amongst other) Windows Mobile. There are modules for NES, SNES and more available. You'll have to pay for it to play more than five minutes, but hey, it works and with this amazing skin I've got myself a little gameboy thingy.
And ROMs are amazingly small. (Super Mario Bros is 40 kb! I can add 200 000 of those on one SD card). The music brings me back.
Woot woot. :)