Wii
The Wii Remote is a controller that is like a regular television remote. The Wii Remote uses accelerometers and infrared light sensors (from LEDs inside a 'sensor bar') to know where it is in 3D space. This lets people control the game using physical movement and by pressing buttons. The controller connects to the console using Bluetooth. It has a rumble feature (the controller shakes when the game being played tells it to do so) and a speaker inside the remote.