You heard it, Sk3tch, some tech savvy guy out there made it possible to use the ORIGINAL NES CONTROLLER with the Android Device and Bluesmirf (Bluetooth) technology! He did this by combining a breakout board, Arduino, and a blueSMIRF Bluetooth module.
This gets me real excited! I love seeing freelancers get creative and come up with stuff like this! Feel free to check out his Youtube Video of him playing Mario.