When Benedict Cumberbatch signed on to play WikiLeaks founder Julian Assange in this week's The Fifth Estate, he knew he was up for a challenge. Not only does the controversial figure have a distinctive look, but when Benedict reached him by email, he tried to convince him not to make the movie. We caught up with Cumberbatch to get his take on the true motivations of the man he plays and his dramatic physical transformation — bleached eyebrows and all.