It's not exactly the Wiimote, but this new remote joystick, the Zeemote, comes close enough considering it works for cell phones. It looks like a a tiny version of the nunchuk that comes with the Wiimote, with a joystick up top for the thumb and buttons up front for the other fingers.

The Zeemote communicates with cellphones via Bluetooth and can be used to play games or to navigate. The device also includes dedicated buttons for navigating through your phone's media player. It looks pretty neat and looks like it can be used to compensate for cellphones with hard to press keypads.

Some interesting devices have been popping up for the mobile gaming arena, including the PIP stress monitor; perhaps we'll actually see a motion detector in the future? Meanwhile, FinBlade, the company who developed the Zeemote, shows us a demonstrated of their game 2-player game, Fireworks: