That was such a fantastic episode. Jon's by far my favorite character, as he is in the books, and I've long argued that the return of the Others and the Long Night is the real story, with the fight over the Iron Throne just being a distraction. (Which is why I've always hated that they named the show "Game of Thrones." It's catchy, but the story's bigger than that.) Anyway, I'm really glad they finally put the White Walkers front and center and showed us the true threat they pose. I was incredibly pumped when Jon discovered that Longclaw could withstand that Walker's spear. I'd actually completely forgotten about the dragonsteel conversation he and Sam had had in the books, so that was a pleasant surprise. Now that Jon knows how vital Valyrian steel truly is, I think something like this might possibly happen next season... Spoiler I can see Jon sending Samwell to the Citadel in Oldtown to study Valyrian steel and try to rediscover how to forge it. Westeros is going to need as much Valyrian steel as it can possibly acquire. Of course, we know that dragonfire is involved in the forging of Valyrian steel, so hopefully that will be how Daenerys' storyline finally connects to the one in Westeros.