Ok, I'm just going to do it...I'm creating an Aidan Turner for Roarke thread.
So, biggest problem is that he doesn't have blue eyes, which is why I hadn't yet suggested him officially. I know he could wear contacts, and I'm not a big fan of that, but, whatever.
The other couple of problems might be that he's got very curly hair. So, it would be a bit of problem for him to have the longer hair that Roarke has, since, it would probably tend to get unruly. At least that's what it seems from watching him in "Being Human" and "Poldark."
He's also generally hairy, which I don't mind in the least, but some do, so there you go.
Still, he IS Irish, and looks pretty close to what I imagine Roarke would look. (again, minus the eyes).
Here's a couple of vids, the first is an overview of the "Poldark" series for anyone that hasn't yet seen it (it's a fantastic series)
Here's a good overview of him as Philip Lombard in "And Then There Were None"
And I admit it, I am just wanting to be able to see him in as many things as possible.