I've been trying out [NDepend](http://en.wikipedia.org/wiki/NDepend), been reading a few blogposts about it and even heard a podcast. I think that NDepend might be a really useful tool, but I still don't see where I would use it. 

How do you use it? Do you use it, why? Why not?

I would like to hear about some down-to-earth real world examples.