The NES EMU 7 project, which made headlines over the weekend for reportedly not being allowed in the Marketplace (even though no has tried to submit it), is back with some improvements.
In fact, if you have some techy knowledge and an unlocked device you can now make your own emulator + NES game to load on your phone. We did just that with MegaMan 2 (ka-lassic!) and gave it a spin on our Focus.
The NES EMU 7 project is being done by one person right now and it still has some ways to go, but so far it's looks promising. We'll check back in a few weeks to see how it progresses.
Source: NES EMU 7