Peter,
You will find African fetish statues in many different styles. Mostly, people think of the 'nail-covered' statues of the Kongo-tribe in Congo, like the one David showed.
But there are many other 'forms'.
Here is one of my collection. It comes from West-Africa. More exactly the Benin/Nigeria border region. It's a power statue of the Nago-tribe.
To this piece some ironwork was added to its head. If I'm correct, this has something to do with the god of thunder.
http://img.photobucket.com/albums/v1...man/f234vs.jpg
http://img.photobucket.com/albums/v1...man/f234ks.jpg