Ask HN: What do you want to see in a portfolio?

You've seen endless amounts of Javascript libraries, HTML5 "Next Big Things", end-alls of social networking and aggregate-your-everything's. You've dealt with the brightest young minds who could recite you their textbooks word for word, but couldn't find creativity if it hit them in the face. But what haven't you seen, HN? What is it on a portfolio that truly wants to make you say "You're hired"?