Adding to yesterdays post, I found an amazing video today about dimensions (Dimensions by Jos Leys - Étienne Ghys - Aurélien Alvarez). The animations are stunning. I have only watched the first chapter so far, but I was impressed by how the beauty of mathematics was easy to see. The Creative Commons license means it can be used quite freely and it comes in more than a handful of languages.
I am also planning to watch a history of maths show on BBC four tomorrow, hosted by mathematician Marcus du Sautoy. Wow-ee!