The Novint Falcon is one of the first PC controller interfaces to offer force feedback, perfect for games. You grasp the ball-shaped object and move it around in any direction for real time interaction. This device will go on sale in ’07 at under $100. Gizmodo provides us with a hands on review. Two videos after the jump.
If there’s a rough ball on the screen, the Falcon will vibrate around the surface of the sphere and prevent you from putting your hand through the actual ball itself.