Some thoughts on Season 3 so far (2 episodes in).
Scene between Sansa and the Tyrell grandmother where they're asking how Joffrey is: sooooo well done. Just like in the book, I got chills down my spine. Just the palpable relief that Sansa expresses at being able to express herself for once. Also I'm glad that they didn't have a bard singing over them during the scene to keep from being heard. I don't think that would have been very good television.
Scene between Catlyn Stark and Robb Stark's wife: the guilt she feels for not accept Jon Snow as her son, and saying this misfortune has befallen their family because of her inability to accept him? Again powerful stuff, even though it chaffs a little, since it wasn't in the books. Not only that, Catelyn was actually one of the characters whose thoughts were open to us. And she never expressed such a regret even in her head, did she? Still, I enjoyed the scene.
The Scene where Shae is being so protective of Sansa Stark as her handmaiden, even going to Tyrion for help, to help protecting Sansa from Littlefinger. Shae is a pretty badass character on the TV show. It's going to hurt deliciously all the more when she eventually betrays Tyrion, I guess, but I'm loving this change to Shae.
They finally met the Frog people! Bran has been united with Jojen Reed and his sister finally. Quite different from the book, but I'm glad the characters didn't get totally cut. They just got cut from Book 2.
The torture scenes with Theon: So yeah, this is stuff from Book 4, but I suppose it was happening during the events of Storm of Swords.
The fight between Jaime Lannister and Breen of Tarth: Great stuff. Again, straight out of the book, but well choreographed and entertaining to watch.
Storm of Swords is the best book, so I'm happy to see they're doing a good job so far.