Have you heard? It's Pi Day. March 14—3/14—get it? Based on calendrical proximity, it's kind of like St. Patrick's Day, but instead of endless rivers of booze, there's an endless stream of digits.It is, by all measures, a fun day—especially if you're into math, physics, science or civilization. After all, pi's turned out to be a pretty big deal for us humble humans. It's been an even bigger deal for the not-so-humble humans in history, however. One of the earliest known uses of pi is found in the ever-incredible Great Pyramid at Giza, whose perimeter adds up to a multiple of pi. Egyptians later became the first to write the number down, and the value proved key to countless mathematical and scientific breakthroughs over the next few thousands years. Also, that Darren Aronofsky movie.Speaking of movies, something a lot of people like to do on Pi Day is make videos about pi and post them on YouTube. Most of them are pretty bad. You'll have no trouble finding footage of kinds reciting as many digits of pi as they can while doing weird things like Hula-Hooping or solving a Rubik's Cube or both at the same time. There are plenty of videos involving actual pies with some creative iteration of the mathematical value baked into it. There is, of course, a terrible parody of Rebecca Black's "Friday." (Seriously, my ears are still bleeding.)There are a couple of decent ones, too, like this impressive array of dominos that represents the value of pi. Seriously don't know what to think of this one involving a "sexy school girl who teaches us the ins and outs of Pi."Then there's this one:As homeboy explains in the video, each digit of pi is assigned a different numeral. Chords can also be assigned numerals, and the combination of the two sounds hauntingly beautiful. It's almost like something you'd hear in a Darren Aronofsky movie.Image via Flickr
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