I've grown to really enjoy the acting of British actor Stephen Graham and just watched him in a movie called Orthodox.  He plays a Jewish man who grew up bullied which led him to boxing and later bare-knuckle fighting, which leads him to make a bad choice, forcing him on a path for redemption, while existing in a sea full of sharks.

If there is a better actor at wearing turmoil and pain on one's face than Stephen Graham, I don't know who it is.

Not only that, the range of this guy is amazing (check him out in the final season of Line of Duty), but for some reason, he seemingly prefers to play and excel within the more darker roles.  And here is the very surprising thing - check out any number of his live appearances and this man is one of the most charismatic and lively people around. On top of that, he is so revered and loved by his peers that so many of the just gush over him, but don't take my word for it - pull up some of the YouTube videos of his appearances and he simply just blows people away with his amazing charming and courteous personality.  

I'm now going to search for one of his more lighter roles (if I can find one).