Breaking Bad and Better Call Saul are EXCELLENT. The attention to detail in these shows, from the location shooting to the vehicles they pair with each character, are impeccable. There's just something about the production quality of these shows that set them apart from everything else.
The Law & Order shows are standards, but I watch SVU more than the rest. Been watching that one since the beginning. The subject matter is pretty screwed up sometimes, but it does well when people get revenge and justice. The new Organized Crime one is really good so far.
We finished Criminal Minds earlier this year. I enjoyed it until the last couple of seasons, where it felt like those left on the show were just going through the motions. They are talking about bringing it back soon, but I'm not sure it will be as good as it used to be.
Currently marching through NCIS right now. Really liking it, but made it to season 14 and some of the stars of the show are leaving, which is unfortunate.
Another one that I haven't seen mentioned is Boardwalk Empire. I really enjoyed that show. Steve Buscemi in a serious, sleazy, villainous role was something I wasn't prepared for, but he pulls it off amazingly well.
For the classics, I dig Rockford Files a lot. Still holds up, and still fun. I am a little biased, though.