Okay, so I happened to watch a video by Vi Hart one day. It came up again today, so I searched for more videos. She has quite a few and they're on the Khan Academy website! In many of them, the math is complicated and I feel like someone whose brain has atrophied, forgetting all of his Calculus II lessons but extremely confident about prime numbers and simplifying fractions. Oh, how I've fallen.
Anyway... I really enjoy listening to her. I'm going to embed three videos for your enjoyment.