$2 Joypad App Turns Your iPhone Into A Wireless Video Game Controller

www.youtube.com/watch?v=6bvdYhlbjRc
Utterly fantastic. Joypad is an iPhone app that operates as a virtual, touch-controlled gaming pad for emulators on your Mac. All you do is run a free helper program under OS X, launch the iPhone app and you're ready to crush some Koopas. It seems to work pretty well, and at $2, is cheaper than [...:]