The Slo-Mo Guys -- a YouTube channel filled with fast things in slow motion -- have a go at a hard drive. It's pretty amazing on its own -- seeing that blurred, too-fast-to-follow arm slowed down is like kung-fu bullet-time for electronics. But once they start splashing water on the mechanism? Woah.
How a Hard Drive works in Slow Motion - The Slow Mo Guys (Thanks, Fipi Lele!)
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.