If you're still trying to decide what to wear for Halloween, grab your monk's robe and hammer and go as Martin Luther. On this day in 1517, Luther nailed his 95 theses to the door of the Castle Church in Wittenberg.

For you heathens unfamiliar with Luther, he started the Protestant Reformation which, among other things, is the reason you can't swing a dead cat in Texas without hitting a Baptist.

(Why do I know this and Josh the Angry Lutheran doesn't? Oh yeah, because Tim pointed it out first.)