Not sure if anyone else has recommended this, but Deadwood is amazing.
About ten years old, it's a series about cowboy-types living in a town that hasn't yet become a part of America. God digging, swearing, honour, politics, gun firing and the actor who played Lovejoy as a powerful, Machiavellian saloon owner called Al Swearengen. Pretty intelligently done with great storylines and memorable characters.