Joystiq held a design competition way back during PS3 launch. It was a mystery how the new PS3 controller was going to look like and they asked their readers to pitch in. Sony played it safe and kept the Dual Shock design but I recall this cool concept submitted by one Adam Portilla. It's a sphere shape controller and I believe it'd be quite ergonomic to hold it too. I'll prototype one and will update it here with feedback. Kudos to Adam indeed. I think it can never be a mass marketed item but would make a very nice special edition licensed controller. Katamari Damacy maybe?