Aidan Gillen (Tommy Carcetti)
Most Recent Projects: Game of Thrones (2011-2013), The Dark Knight Rises (2012), Shadow Dancer (2012), The Good Man (2012)
The Prognosis: Like the big studios during the early days of Hollywood, HBO has a grip of regular actors the network uses to populate its shows. Irish actor Aidan Gillen has benefited from this, and landed a recurring role as Petyr Baelish, aka Littlefinger, aka the man with the keys to the brothel, on Game of Thrones. Wheeling and dealing in Baltimore, forging alliances in King's Landingâ€”it's all the same.