Oracle of Bacon

Taking the painful effort out of six degrees (not necessarily routed through Bacon), OoB uses IMDB data on over 1.4 million actors to let you find the shortest distance between any two of them. They also offer "Best Center" stats (apparently Connery is better positioned than Bacon), and have deduced a "Worst Center", though they won't say who it is, to protect the identity of Dan Cortes.