John Green is a genius. Don't take our word for it (though we're huge fans here), as that's what Shailene Woodley, who plays Hazel Grace Lancaster in the forthcoming "The Fault in Our Stars" movie, says when asked about the book's author.
However, when she came in to talk to HuffPost Live, along with co-star from "The Spectacular Now" Miles Teller, she hadn't yet learned how to do the Nerdfighter
salute, so we taught her, with a little help from the Vlogbrothers
. Check it out below.