Borgia
As a huge GoT fan I have to say, forget his performance in it and compare it to this. I am just watching this European version of the story of the Borgias when Rodrigo was pope. In general it suffers from the same flaws as the US version, wanting too much (nailing history down with the sledgehammer) while watering down historical authenticity on the other hand and some bland acting. Iain Glen however in his brief appearance in season 2 episode 3 "Palm Sunday" and 4 "Pax Vobiscum" as Girolamo Savonarola is the best acting in the series I have seen to this point. Especially in episode 4 he is awesome. Highly recommended for all who liked him as Jorah Mormont.