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@Calador: I don't "know" anybody, except the producer and the writers, and so far they are fantastic to work with. Great people. Keep in mind that I'm the n00b here: I can't make something like this happen on my own, since I don't have the sales of a George R.R. Martin. The producer and writer all love the book and are excited to make something.
As for CGI, we haven't got to that point. There is talk about using practical effects. Everyone involved loves the Stan Winston school as opposed to the CGI approach. I think that all comes down to budget, though -- better to have a show with so-so FX than to not have a show at all. It's still about the story.