There are two types of people in the world: those who preferred geometry in high school, and those who preferred algebra. I preferred algebra. But whether you liked geometry or algebra–or even if you hated them both–you will enjoy the following geometry movies.
Not Knot Part 1 and Part 2 — All about knots.
Outside In — How to turn a sphere inside out.
Grace and Peace
(Thanks to: SciAm Observations)
GeoChristian 