Excellent fact, and bonus points because the fact is only recorded in a footnote of a writeup about an already moderately obscure fact.

Sinister!

I don’t think that really narrows it down, but this is certainly one of the math animations of all time!

This animation and explanation is really good!! The studio, which is guess was new at the time, was called Pixar. According to the credits, one of the animators there shares a last name with one of the mathematicians who developed this method (Thurston).