Disunion is a guillotine simulator that uses the Oculus Rift VR headset to bring you a realistic experience of being beheaded (this experience is enhanced by a strategic neck-chop!). It was created in two days at the Exile game jam by Erkki Trummal, André Berlemont and Morten Brunbjerg, who clearly enjoy making people feel like they're had their heads lopped off just a little too much.
VR helmet Guillotine simulator
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.