Spotted at Comic-Con: Spectra, a series of well-done, smart comics about physics from the nonprofit American Physical Society. The art is great, the content is great, and leads to good, illuminating experiments you can do with household objects. They're free downloads, along with supplementary classroom materials, and you order signed hardcopies, too.
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.