The first two featurettes—the first about the Battle of Castle Black in general (and that amazing 360-degree shot), the second of George R.R. Martin talking about the Wall—are free of any specific spoilers, in case you want to… watch featurettes on an episode you haven’t seen yet? To all one of you who does that, this is your disclaimer. The third vid is quite spoilery, being as it is about this particularly intense moment. Go watch that again, then come back for the featurettes. I’ll wait.