There is countless weird and useless applications on the iPhone, and while this one might not be a useful application; I feel I would be using it the most.
iPhone NESynth Application retros your Ears
An artist from New York. Will has been writing, designing, and loving video games since he was young. He has traveled across the United States, and parts of Canada in order to learn more about the world of gaming. After visiting E3 for the first time in 2009, he has vowed to return there and show off a game of his own. In his spare time he tinkers with electronics, programming, and of course collecting video games.