Moritz Stefaner is a genius
I was thinking about how to best represent connections between people in my Six Degrees of Separation Facebook application and Paul Crabtree recommend I get in touch with Moritz Stefaner as he had something that would fit very nicely indeed.
And he most certainly did; the relation browser was exactly what I wanted to do, but better. If you have a Facebook account, install the application, and go to the Show Network tab you'll see what I mean.