Okay, what's your favorite piece of trivia?

What is the crown jewel of your hoard of tidbits?

Mine is the origin of the word "trivia." tri via, it was a three-way major intersection between three major roads that led all over the European part of the Roman Empire; almost everything went through there at some point, including news. You wanted to know what was going on, you got your news through Trivia. The word literally means "three roads."

Of course, this is only one debated origin of the word, but it's my favorite.