An alpha application for Nokia’s N900 allows the handset to operate as a mouse, keyboard, gamepad, media remote, or PlayStation 3 controller via Bluetooth. As you can see, after a relatively painless pairing process, BlueMaemo enables the N900 to operate as a directional pad. While I’m not sure how comfortable playing a proper game on there would be, the sheer versatility can’t be argued with. Microsoft, take notes. You can find more info about the app here and download links over here.