Here's Saturday Morning Central's roundup of Beatles covers from the Muppet Show, including a surprisingly sensitive version of "While My Guitar Gently Weeps" and the Sesame Street "Letter B" (Let it Be) cover.
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.