Carles V. Ginés has released the first BennuGD game for the Wii, called Garnatron
It's a very small one and leaves a lot of room for improvement, but it's fun to play :)
You can see a video of Garnatro in action in the link above.
Also, Pixel has added Wii as a platform for your games to the BennuGD projects uploading form, so now you can just add your BennuGD Wii games to the list :)
PS: Don't tell anybody, but full WPAD support (rumble support, accelerometer data reading, angle checking....) is done and should come as a binary soonish.