In the space of one hour, we had the Stark contingent wiped out at King's L, Arya's Awesome Escape, the zombie attack at the Wall, Robb marshall the Bannermen and march to war, the Lannister forces pummling the rivermen offscreen, Tyrion pick up Snagga and co AND Dany aquire a certain slave while Drogo shows just how badass he is. Oh, and Sansa did some stuff.

Syrio stole the show with his defence of Arya. That moment was just as awesome as it had to be and more.
Jon vs the ice zombie wasn't bad tho'. It was more violent than i remember it being in the books. Admittedly the way Jon burned his hand was a bit sillier (ummm.... grab the latern by the hot part? ummm.... the zombie wasn't THAT close...) but the scene still worked.
Robb taking control of the Northmen was way way better than i was expecting. The actor's been holding back his inner badass until now because it was totally believable.
And we finally see why Drogo is King Badass. The bit where he dropped his knives was just perfect!
On the acting side of things, everyone held up their usual awesome performance... i BELIEVED Barristan Selmy when he said he could cut through the five King's Guard "like cake!". Varys was suitably ambiguous. Cat's distress was real as was her pride. Sansa's nurse blocking the soldiers was so noble it hurt. Lysa is still fucknuts crazy.... i could go one but you get my point... this was an excellent ep.
I can't believe we only have two more to go, but i'm psyched for them.