I was fairly disappointed. I re read all of the books in anticipation for this, and the characters were pretty off (with the exception of the Starks). There was no ridiculous, cruel rage out of Viserys. The rape on the show (which everyone on SF seems to be in agreement on) was far different than what the book portrayed. They missed the whole point of the "No" and lost a lot of the Khaal's character. Tyrion was incredibly charming (point), not particularly jaded (lost point) and wouldn't have been a bad looking if he was 3 feet taller (major points lost). It's going to be hard to push a lot of Tyrion's stories without the "Imp" factor. He'll probably be one of my favorite characters in the show, however. Joff was supposed to be very good looking, not Malfoy's little brother. Where did everyone's curls go (this one is unrealistic when casting and doesn't bug me THAT much)? Sansa and John weren't quite what I'd invisioned, but they work given the books. Cersei is probably going to grow on me as a character. She seems to have the right ingredients. Same goes for Jaime. Mad props on Ned Stark, Bran, and Arya. Catelyn looks like an aged version of the perfect character, but everyone is older I guess. Her character is spot on.
The little touches were nifty and made me happy, even if they did seem forced.
All in all I think that this show needs to slow the fuck down already. If they're running at the pace the whole time it's gonna blow. If they can get it on lock, I think it'll make for a good series, but only if it runs parallel to the book instead of right on top of the story.