Fair point, tho he is pretty much only reason I took notice of the series existence when it first premiered, besides being sci fi, because he (and another guy in 12 monkeys) was in Nikita show, played a whiz-savvy funny nerd character I liked for several seasons. Though supporting role, was suprising/intriguing to see him be a showrunner/lead.
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Are you crazy? Banshee's main lead MAKES the show, I cant imagine anyone else doing this type of role so genuinly gritty James Ellroy noire-ish nameless broken broody anti-hero as he has. And Michael Cox was decent as Daredevil really. Agreed about Marco Polo, and I cant judge 12 Monkeys, though I would understand reservations or not being convinced since up til this show he has been more a colorful nerdy supporting actor.
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Wait....Are you saying 12 monkeys reminds you of BG a little

Thats one of my top few all time fav series (with the wire, firefly, Lost etc).