Love and Lots of Sugar has documented some of the creation of a remarkable Captain America fourth birthday cake that, in cross section, displayed the stars-n-stripes. It's a really sweet bit of topology-based baking, and, judging by the photos, was a smash-hit.
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.