I have to ask – why? :)

Nothing that the Pi can run would benefit from the motion controls on a WiiMote… Except maybe MAME gun games? That’d be a pretty good challenge to get working on the Pi

Anyways… How are you connecting the WiiMote? You need some kind of bluetooth interface and a sensor bar. I have a DolphinBar, I’d be willing to try it but there are no drivers for DolphinBar on linux