The Game of Thrones youtube channel released clips from the stars' audition reels, and they will delight you as well as make your brain hurt. It's crazy to think there was ever a time when Natalie Dorimer wasn't Margaery Tyrell and Melisandre didn't wear red. But then there was Kristofer Hivju, who spit a chewed-up carrot across the room and proved that he really is Tormund Giantsbane.