Simon Singh has a YouTube video on Fermat's last theorem that is a masterpiece of mathematical communication. As someone who is an engineer with a bit of math education (lots of calculus, linear algebra...etc), and who likes applying math, but does not intuitively get it at all to understand what mathematicians talk about, I found he communicated it to where I got the concepts and he fuzed it with the history in a splendid fashion. Great stuff.