Bre had an interesting link on her site about numerology, runes and birth mates. Turns out she's cosmically linked up with every famous evil doer this side of the solar system. And she always seemed like such a nice girl.
Some of my birth mates turned out to be real thinkers, stinkers and tyrants too (hi Rosie!):
Britney Spears, Calista Flockhart, Cary Grant, Charles de Gaulle, Dwight Eisenhower, Eddie Murphy, Eliza Dushku, Friedrich Nietzsche, James Brown, Jane Seymour, John Lennon, Justin Timberlake, Kim Jong Il, Lewis Caroll, Ray Bradbury, Rosie O'Donnell, Thomas Edison, V. I. Lenin
Try it here. It takes about 2 seconds.