Gillian Anderson's brush with Game of Thrones is largely hushed, but she made a definite passing comment about rejecting the chance to star in the show, and you'd imagine she'd have been up for a major part in the series, though you could guess that the parts of Catelyn Stark or Melisandre would've fit her well. The X Files actress told the Daily Mail: "My 18-year-old cannot believe that I would turn down Game Of Thrones or Downton - things she loves to watch." Nobody knows for certain which role she was offered, but the truth is out there...