Cliff has released an app for Mac OSX which will allow you to pair the Wiimote with your Mac to view and send commands. This is NOT a full blown driver, but now that the initial hooks have been made it will be much easier for other developers to get in on the action to start coding the other parts of the driver.

You can download RVL Enabler for OSX from Cliff's site:
http://windower.net/RVLEnabler.zip

Source Code is here:
http://windower.net/RVLEnablerSource.zip

via LiquidIce