For people who haven't read the books, you have no idea the kind of awesome that is coming.
The tv series does the books proud, every character (except maybe Cersei for me) has the perfect actor. Especially Arya and Tyrion.
. I was so impressed watching the series as normally I'm always left disappointing after i watch a series of a book i love. Arya and Tyrion have to be my two favorite characters in the books :P.