Wolfram - He's Totally Radical.

Radical ideas for math education.

Infinite Elephants and a New Crush for Valentines

Vi Hart's blog seems well worth keeping an eye on, perhaps even crush worthy!

The Proof of Cones and Their Volumes

Symmetry & Kaleidescopes

Looking to share some stimulating information about real world applications of symmetry with my eighth grade students. Here is one contending video clip.
This video has some really interesting demonstration of the relationship between the angles and the number of images shown in mirrors, but the intro is cumbersome.