I know what you are thinking: but Apple doesn't have a console for the controller to work with. They do have Apple TV, though, and the patent they recently filed reveals that they are doing research on a 3D remote control system that would imitate the Wiimote's functionality, also adding their famous touch technology into the mix.
The patent filing is actually from November 2006, but was just published this week. Here is a bit more from the filing itself:
Speculation points in the direction of Apple TV going for a casual games approach rather than the hardcore, but since Nintendo has been tremendously successful with the casual titles they have released for the Wii, it seems it may be a good direction to head in for Apple. The most interesting related comment of all in my opinion came from Greg Canessa of PopCap games, who mentioned Apple TV as a platform for casual gaming in the next five years:
Well, if Apple takes on the gaming world, we could see something truly amazing coming our way, considering the ubiquitous popularity of their products. What do you think?
[Via Apple Insider -- Thanks, Jonathan]