A geeky home-theater enthusiast has built and lavishly documented a home theater setup that resembles the bridge of the Starship Enterprise: Link (Thanks, Chris!)
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.