Have you seen the Wrath of the Lich King trailer? Because that was basically the Wrath of the Lich King trailer.
I enjoyed the episode, though anything with White Walkers is sexy to me.
To be fair though, ever since I saw that wight polar bear, I called it on the spot that zombie dragons were going to happen, and lo and behold: Zombie dragons.
I have since seen the episode 3 times, and there are a few things that do annoy me, though.
1) Redshirt soldiers to drive tention.
2) Nobody died but Thoros and Benjen, who were a minor, minor characters, anyway. (and Benjen's death was a huge waste)
3) Sansa is an annoying ***** with an annoying ***** personality
4) Arya is a bit unhinged, isn't she? She seems to have taken a drastic weirdo turn, all of a sudden.