Yesterday I asked Robert Broglia about if take his emulators on OUYA. Robert has emulators like MD.emu, GBA.emu, Neo.emu, NES.emu, 2600.emu, and more, on Android. He responded via Twitter:

I: your emulators coming to Ouya?
Robert: Yes, I'll look into Ouya support once the dev tools are released.

https://twitter.com/rakashazi/status/284528726975340545

Very very interesting