25 Best 'Game of Thrones' Episodes – Updated

From Blackwater to the Battle of the Bastards, we count down the HBO fantasy epic's most memorable hours

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'The Mountain and the Viper' (Season 4, Episode 8)
Hafþór Júlíus Björnsson and Pedro Pascal in 'Game of Thrones.' Macall B. Polay/courtesy of HBO16/25

16. 'The Mountain and the Viper' (Season 4, Episode 8)

Two men enter, one man leaves: That's the brutal, beautiful simplicity of trial by combat. But the climactic duel didn't just pit Oberyn "The Red Viper" Martell against Gregor "The Mountain" Clegane. It took three of Game of Thrones' greatest strengths – roguish fan favorites, monstrous sociopaths, and flabbergasting gore – and threw them into the arena as well. The result? Actor Pedro Pascal's sexually voracious warlord got his skull crushed like a tomato right there on screen. Shock tactic? Yes, and no show does it better.

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