Season 4 has at least three scenes I'd watch over and over and over (which I actually did):
- Tyrion's trial and his EPIC middle finger for everyone in the room, ending with his request for trial by combat. Which contains what I'd call the best line of the season: "Watching your vicious bastard die gave me more relief than a thousand lying whores".
- Oberyn visting Tyrion in the cell and offering to be his champion.
- Oberyn vs the Mountain.... as long as I pause before the end
Remember Bronn telling Tyrion how hard it was to fight the Mountain? he was pondering aloud "Maybe I could dance around him 'til he's tired, get him off his feet somehow"... that's exactly what Oberyn did, on top of pissing him off and taunting him repeatedly. Bronn actually figured out the right way to fight the Mountain, and Oberyn put it into practice and actually "won"... well, if you forget the part where he looked away enough to be tripped and get his head bashed in but details.