"A pair of mathematicians has created a video that shows how to visualize and understand Möbius transformations, which are a fundamental and highly abstract mathematical tool. The new video, "Möbius Transformations Revealed," has become an Internet sensation, with 60,000 hits on YouTube so far.

"... 'You need some pretty heavy mathematical machinery that people usually don't do until their first year of grad school to prove the stuff in the video,' [Jonathan] Rogness says, "but we've been showing this to high school students and they seem to get it."