Agree with Sojo - love the discussion.
My wife never read the books and thinks the show keeps getting better. I personably think, as good as it is, the show is plodding a bit. But, I also think the books are plodding a bit.
As a long time book reader, I REALLY appreciated how the show handled the best parts of the series, the Red Wedding, Oberyn/Mountain battle, Ned's fate. If you were hooked on the books, these events literally took your breath away. Just watch some of the reaction videos and you can see that the show nailed this. Any event that illicits such a strong reaction is not just due to the shocking nature of the final event. It was the previous drama and backstory that builds up to the event that does the heavy lifting of the viewer/reader to that point where the coaster takes the plunge. Here I think the shows producers deserve much credit. That to me is the ultimate compliment when adapting others work.
For the plot deviations, etc., I agree with old man George. The books are the books, the show is the show. It is quite possible to enjoy both for what the are. It seems that he does.
For mainly book fans, T2K made the most important point, re: WOT. I really hope it doesn't happen, but some of us have been through this previously, and the signs are there.