Thank you Simon (and Homer) for pushing me to watch the second video (Fermat's Last Theorem) all the way through.
It isn't a video I would have chosen to watch from a YouTube list without the Homer Simpson link. I urge you to watch it, too. all the way through. In it, you'll see all sorts of amazing learning, teaching, sharing, understanding - in short, most of the IB Learner Profile in action - and, oh yes, some very interesting mathematics (and a superb example of digital storytelling)!