You probably could hook up a USB controller to it if there was a driver for it. There are some apps starting to pop up to be able to use bluetooth controllers like the Wiimote and PS3 controller to control your android phone. None of them work for the Galaxy S yet (if somone know of one PLEASE tell!!). But what would be awesome as hell is have my captivate hooked up to a TV and sit back on the couch, chair, or bed and use a bluetooth cotroller to play video games. How awesome would it be to have a NES, SNES, PS1, Gameboy, etc with a zillion games in your pocket with you at all times. If you travel alot, you could bring an AV cable and a Wii controller and play games in your hotel all night! I really hope they get one of these bluetooth "hacks" working for the SGS phones soon!