Recently blasted through Avatar: The Last Airbender on Netflix. Castlevania has 2 or 3 good seasons, as well. I've heard good things about The Queen's Gambit (live action limited series), too.
Haven't seen much of the newer stuff. Of all of the crap I've watched in the last 20 years I think "Rome" remains one of my favorites. Liked "Boardwalk Empire" a lot but it went on a bit too long and got tedious. My wife loved "Game of Thrones" but I got tired of it after about 4-5 seasons. First 3 seasons of "Breaking Bad" was some of the best TV ever but it got ludicrous after that. Another oldie but I enjoyed "Life on Mars" even with all the weirdness.
My wife and I have watched a few together. Justified was pretty good and I'd suggest that one as my sleeper. Sons of Anarchy, Game of Thrones..I agree with other posters.