Ditto on Dexter. It was never a "Best Drama" type show but it was pretty good. Fourth season was borderline amazing and John Lithgow should have won something for that. Everything since is dreadful and I'm actively hatewatching two straight hours of Showtime between that and Ray Donovan.
Damages was another really good show that gets little pub. I'm also probably bigger on Boardwalk Empire than most. I heard Margaret basically only does cameos this season which is unnerving since she was the most complex character by far.