I saw this paper referenced on the front page of Reddit a few days ago. Can you guess why it's special? (Hint: It has to do with one of the authors.)
I'll let Family Guy's Tom Tucker write down the answer for you...
OK, perhaps you need some more explanation. If so, there's a nice Wikipedia article that sums it up pretty nicely here.
Aaron Santos is a physicist and author of the books How Many Licks? Or How to Estimate Damn Near Anything and Ballparking: Practical Math for Impractical Sports Questions. Follow him on Twitter at @aarontsantos.