17. 'The Children' (Season 4, Episode 10)
This week on Game of Thrones: The shit finally hits the fan. Tyrion kills Tywin, Brienne beats the Hound, Stannis saves the Wall, Dany chains her dragons, Arya escapes Westeros, Hodor duels with skeletons and Bran meets the Children of the Forest. Season Four's finale spectacularly illustrates the show's storytelling scope, delivering climax after climax like a medieval Dirk Diggler.