Your one stop conspiracy connection link
I haven't played here much, but it looks fun: NameBase
Just put a name in, say Rothschild, or Bush or Clinton. And when you get the opportunity, click the connections link (in pink), and look at the pretty diagram it generates.
Hell, try your own last name and see what comes up. You may be better conected than you ever knew.
Sadly, I am in fact not. My last name generates no hits. The only thing that makes sense, is that I'm living under and alias and don't know my real name. Well, it makes a better story than the truth.