Yeah, I wouldn't place her among the mistaken cast choices. Kit Harrington, however, probably tops my list. There's just no emotional range. I think the show doesn't get enough credit, especially from former book readers. It was nigh impossible (in fact, Martin claimed that was part of the point!) to adapt the series. That they have, and done as well as they have, is nothing to scoff at. It's easily the greatest achievement in fantasy television in terms of scope.