In this clip, a "modern samurai" called Isao Machii efficient slices a large variety of challenging objects in twain with his sword, including a round fired from a nearby pellet-gun. It's pretty astounding stuff.
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.