Most people, whether they admit to it or not, enjoy learning about their birthdays and/or who shares them.
Well, I stumbled onto a Wikipedia page for things that happened on a given day. I have some cool people with my birthday — Carl Jung, Kevin Spacey, Mick Jagger, and even Chris Pirillo. :) The cool one about Chris is that it’s also the exact same year.
Anyway, you can do a Wikipedia search on your own birthday and learn some pretty cool stuff about it. Check it out.