Microsoft SideWinder Freestyle Pro (USB):Unique internal motion sensor. Depending on whether you have the sensor on or off, you can have two game-playing experiences in one controller:
Turn the motion sensor ON and immerse yourself in the action. Just tilt the game pad in the direction you want to go and you're there. You can even adjust the sensivity level for optimum control. The sensor is on by default, but it's easy to switch it on and off by pressing the game pad's Sensor button.
Turn the sensor OFF, for a traditional game pad feel. Use the 8 direction points on the D-pad to navigate in your game.