Hayden Donnell (has memorised every word of every book and spends his evenings correcting historical inaccuracies on the Westeros Wikipedia page):
Tywin Lannister is a master of the politics of power, a man who knew every marriage in the Seven Kingdoms, every old grudge and secret desire, every weak spot to press on. He could end a war with the stroke of a quill and skin a deer while delivering a lecture on duty. The Lannister patriarch knew everything about everyone except his own family, who he didn't know at all. His end started looming before he was interrupted on the toilet by a crossbow-wielding dwarf. It glimmered when his son Jaimie defied him and chose to stay in the Kingsguard; took shape when his daughter Cersei told him he was the last man in King's Landing to know that she and Jaimie were closer than most twins. His failure to see the truth about them was nothing compared to his refusal to acknowledge Tyrion, the one child with the brains to rival him. Was it surprise in his voice when that child hit him with that first crossbow bolt? "You shot me," he said, as if it was barely believable. The most powerful man in the world, the golden lion who knew so much about so many, killed by the scorned son he never understood.
Chris Schulz (has watched every episode, is halfway through book one, and has a not-so-secret obsession with Brienne, the Maid of Tarth):
Thrones producers promised the finest hour yet, and they delivered. How? By getting dark - and wow, did it get dark fast. There was no time to recover between the episode's killer blows: Cersei admitted to Tywin she had been sleeping with her twin brother, then Daenerys had to deal with her wayward, baby-killing dragons. The battle at Castle Black was seemingly settled, only for a skeleton army to emerge from the frost-covered ground to attack Bran and his crew. The Mountain was revealed to be alive, only for Tyrion to strangle his ex, shoot his dad on the toilet and escape. But the episode's key scene was that brutally epic fight between Brienne (yay!) and The Hound (boo!), a nightmarish and bloody fight-to-the-death that provided the season's most disturbing moment - and that's saying something. Between the gutteral grunting, disgusting ear biting and Brienne's brutal rock blows to The Hound's head, more than one girly "nooo!" came out of my mouth when I thought she might be about to be offed. Am I glad she won? Yes .Did my support this season help Brienne win that fight? Probably. Was there anything sadder than The Hound begging for Arya to "kill me"? Well, yes, probably Jon Snow walking away in the snow as Ygritte's body burned. Was I the only one hoping for her to have the last laugh by opening her eyes and delivering her line - "You know nothing, Jon Snow" - one final time?
Robert Smith (has read every book, watched every episode, owns several T-shirts, and possibly has a George RR Martin shrine in his bedroom):
The final episode of this year's season starts with a massive cavalry charge, ends with a piece of justifiable patricide and features skeletal zombies straight out of a Ray Harryhausen nightmare. But it also found room to give The Hound a decent send-off. Sandor Clegane was one of the story's greatest characters, a stone-cold killer with his own twisted sense of honour and some of the best individual lines in the series (his quote about chickens earlier this season might be the best single line of the whole show, beautifully delivered by Rory McCann). But he finally met his match in the equally sizable Brienne of Tarth in this final episode, and finally went down after a fight that went from complicated swordplay to vicious and brutal scrambling in record time. His last tragedy is that he doesn't even get the death he wants, left to bled out in a bleak mountain pass, but that's a suitable ending for this complex character. While The Hound always knew he would die alone and unloved, Arya's cold abandonment is the final insult in a lifetime of indignities.
Cameron McMillan (a Thrones trainspotter who can always be relied upon for up-to-date statistics and random factoids):