Make has an interesting short film that visualizes the relationship of mathematics to nature. Mostly it deals with the golden ratio, but the score is haunting and the visual stunning.
Make: Online : Nature by Numbers: linking math to nature
A great introduction to producing various graph plots in R.
Revolutions: Video: Hadley Wickham gives a short course on graphics with R
Jeff Moser has a great post up about computing skill levels using various different mathematical models. It’s a long one, but he explains everything you need to know along the way. Really tremendous work.
Moserware: Computing Your Skill