Nintendo Wii Official Nunchuck

Connect the Nunchuk controller to the Wii Remote and get ready. The Nunchuk controller and the accelerometer contained within it are the next leap in gaming. 
In first-person shooters, the controller carries the burden of movement, freeing you to aim and fire using a more natural motion with the Wii Remote. 
In a football game, you can make your quarterback elusive with the Nunchuk controller while you look for an open receiver to throw to using the Wii Remote.