Pretty much how I always imagined the RW to play out, I just expected it to be a little more chaotic in the end, instead of just Robb and Catelyn standing there.
Glad they changed Bolton's line to "Lannisters" instead of just "Jaime". That kinda would have ruined Jaime becoming one of the coolest characters this season.
I am pretty shocked that Robb's wife was no traitor, actually pregnant and killed after all. There were so many other options I considered more likely.
Unlike some posters above I thought it was wise to keep it realistic, with no dramatic music or slow-motions. I don't feel that would have fit the situation (or the show to begin with) here.

I am confused about the direwolf situation at the tower. Both kids have theirs with them, right? We don't see enough of them (for understandable reasons). So one of them was next to Ghost all of a sudden before the fight began. Shouldn't Jon have seen that? Or did he and then ran from the tower, knowing that his brothers are in there, to draw the wildlings away? Don't remember that part from the book, really.

The scenes with Arya and the Hound were great. It made all that happened even more painful just how close she got to being reunited. Then again, being a tad late saved her ass.

So I suppose we'll see Bolton meet his bastard next week to reveal one of the most hated family ties of all of Westeros.
Other than that, the majority of next week should be spent by every character hearing about it and going: "Dude, wtf?"