James May is mostly known as the sensible one from the U.K. show Top Gear. But he's also a bona fide tech nerd, and he's here to explain exactly how the digital camera in your laptop, smartphone, or dedicated point-and-shoot works.

Over at Head Squeeze, May and his team explain science, technology, and how all kinds of stuff works. It's a great channel for actually learning something on YouTube, as crazy as that sounds. And something about James May's droll, reserved delivery makes the word "selfie" downright hilarious. [Head Squeeze via Digg]