Honorable mention for my favorite moment in a TV show - Brienne of Tarth a Knight of the Seven Kingdoms. What a shining, glorious moment of satisfaction for a hardworking and truly good character in a season of utter bullshit.
I will always feel that we were robbed of so many satisfying conclusions because of the show rushing to wrap everything up. Not everything had to be tied in a perfect bow, but what we got certainly did not scratch that perfectly placed itch.
I understand they wanted some characters to be disappointments, it could have been cool to have Jaime get super close to a satisfying arc and, at the last second fail. But the last few scenes with him completely backpedalling his entire motivation make no sense.
GOT had so much going for it. And yet, in a post like this asking about favorite episodes, no one is even mentioning it's earlier fantastic episodes - the final season ruined all previous good work.