Margaret here to talk about Hollywood casting directors' collective infatuation with the actors on Game of Thrones. HBO's fantasy epic is a ratings juggernaut and has been Emmy-nominated a hundred times over. Its enormous cast (more series regulars than any other show on television) is getting a lot of attention, and many of them are landing high-profile movie roles. The prestige cable effect, so often noted for its ability to bring movie stars to TV, seems to be working in the other direction for Game of Thrones.