Yesterday was "Pi Day." You know, March 14. 3.14?

It's a day some people may remember from geometry class, but its now found a new following on the web, where fans of math and science routinely produce all sorts of "Pi"-related content on this obscure holiday.

In fact, over 1,000 videos tagged "Pi Day" were uploaded this week. Some took a straightforward approach, like this explainer from Numberphile:



While some people were a big more unconventional. The BYU Mathletes, seen here, used the opportunity to do something unique:



But not everybody is a fan. YouTube scribbler and self-described "mathemusician" Vi Hart produced this clip last year, that remains one of the most viewed Pi Day videos.



If you're interested, you can see Hart's 2012 video here.