It is said that if you go 5 levels, you have a connection to just about everyone in the world/country or whatever.
I am in Chicago and have some family here. I was having breakfast with my uncle and his family this morning. The conversation turned to politics. (I tried to steer clear of it, but my cousin brought it up.) As we were discussing Obama, my aunt told me that their daughter (my cousin) used to live on a cul de sac with Obama. They invited them over for a party one evening but they, shall we say, declined the invitation.