If you are a games fanatic liking playing games with your iPhone, you might complain about the uncomfortable feeling by holding the rectangular cell phone for a long time, but I believe it’ll be changed by using iHandstick, which is a unique iPhone case resembling with a gamepad.
iHandstick supports various iPhones and iPods, including iPhone 3G, 3Gs, iPod Touch 2nd,iPod Touch 3rd. It costs $16.99 USD. You can get it at USBFever.