Well I think AGOT starts off fairly big, slows down for a little while, then shit starts to get real. Indeed the books do start to get better and better, but I think AGOT has more surprise twists while ACOK has a better story and ''WTF'' moments. Book 4's great for character development.
Prolly should keep book discussion out of here, since there's a fucking massive thread for it. Emilia Clarke imo, looks like there may be some sort of lesbian scene from the preview, and I'm sure she'll be naked at some stage too since it's HBO.