Peter Dinklage absolutely nailed that last scene.
Like others, I can't wait for the trial by combat. At first I thought we could maybe be seeing Jaime, as Tywin/Cersei's champion, up against Bronn, as Tyrion's champion, after them having practised together but that's probably unlikely. Would Bronn fight for Tyrion again, even though Tyrion probably has no gold/silver to pay him with this time? Other than Jaime, I can't think of anyone else that would be his champion.
I agree with forehead7, the ideal scenario is Jaime fights for Tyrion and defeats Tywin/Cersei's champion - but this being Game of Thrones I just can't see that happening.
The scene between Varys and Oberyn was intriguing. Varys obviously dreams of sitting on the Iron Throne one day but I find it hard to see how he could ever be king.