I loved listening to Lehrer on Dr Demento when I was growing up so I jumped at the opportunity to take his class, "Nature of Math", when I was an undergrad at U

I loved listening to Lehrer on Dr Demento when I was growing up so I jumped at the opportunity to take his class, "Nature of Math", when I was an undergrad at UCSC. It was great- I learned a bunch of interesting things about math (cantor diagonal proof, pigeonhole principle), all delivered by a witty fellow. Alas, he never sang for us in class. The other math classes I took were History of Math by Ralph Abraham (a chaos mathematician), which was held in the quad (basically an old stone quarry turned into an amphitheatre), making it a lot like hearing a lecture in ancient greece. And Cybernetics with David Huffman, which kicked my ass but I never forgot the lessons I learned.