Despite the fact that I'm italian and the italian stallion myth, I generally don't like photos of naked people, most of the times there is not art or photography on it, it's just an excuse to show a naked body and nothing else. But sometimes, if it's well done, and not just someone with no clothes, it can be a great photo. Because it's not anymore a naked woman, but it's all about shapes and lights, and here Aaron Nace of Phlearn.com shows us a good example of a body shoot. Down here you can see the lighting diagram.
This is the tutorial for one picture, but if you want more, you can consider to buy their Pro Tutorials.