Here's Brent Spiner (Star Trek's Data) doing his greatest party trick: a pitch-perfect imitation of Patrick "Captain Picard" Stewart, including hilarious anaecdotes about how he used this power to sow mischief. Patrick Stewart got his revenge later.
Brent Spiner imitates Patrick Stewart... again. (Thanks, Fipi Lele!)
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.