The OUYA is designed to encourage homebrew development, and as we predicted, various emulators are already in the works for the cubic console.
CVG reports that a NES emulator is being prepared for launch, while a SNES emulator will follow shortly thereafter. Since Android smartphones already have their fair share, it should be fairly simple to adapt existing emulators for OUYA's Android-based operating system, as the "hackable" console is specifically engineered with a view to creating a thriving homebrew community.
Of course, it goes without saying that you shouldn't download and play ROMs. Even if publishers steadfastly refuse to re-release classic retro games on existing marketplaces. Because of, you know, that whole copyright thing.
OUYAs will start shipping to Kickstarter backers on March 28th, but will lack friends lists and achievements at launch.