I wouldn't say that GOT is one of those shows you can watch over and over again. Once the big shocking moments are revealed I think that a lot of people might find a rewatch to be a bit boring. I remember back when it was first released and initially I wasn't terribly impressed and switched it off until i was practically begged by a friend to watch it so that we could discuss it. It felt more like "Game of Talking" to me on the first time through :)