Remember S4E08 of GoT? The Mountain and the Viper? It would be fair to say no other scene on TV or the big screen had as much of an impact on me as the one where Oberyn lets himself be brought down after doing everything perfectly (well, almost everything, if you ignore the way he loses his first spear). I couldn't bring myself to rewatch the scene for quite some time. Might even have been a bit of PTSD there.
The reason I bring this up is because of this: