Spoilers for the following:
Agents of SHIELD
Okay I just wanna touch on this really quickly because I didn't even think I was going to talk about Castle in one of these and then the season finale happened and now I'm grumpy about it. (And no, it's not the cliffhanger, it's not EVEN the worse cliffhanger Castle has done.)
So, let's start with the single most irritating thing to me: there is no way that Beckett was secretly married and didn't find out during the background check that got her a job with the police department, much less the Attorney Fucking General. Having a husband but not disclosing it would have come up because it would have looked like she was trying to hide something from them.
The 'oh I didn't know I was married!' trope is a tired and artificial way of creating conflict, especially since Castle and Beckett's lives have plenty of fucking conflict goddamn.
Of course, this season also featured an episode that implied there was a time traveler so fuckin' whatever, I guess.
Agents of SHIELD:
Okay, so, this show was pretty rocky when it started out. I don't think anybody disagrees. I think everyone who stuck with it through the length of the show mostly did it because they wanted to know what the fuck happened to Coulson. (I mean, that's why I stuck it out through the bad bits.)
The big problem was that the key event that really turned the show around happened in a movie that didn't come out until the season was almost over. Shit didn't get really interesting until SHIELD blew up in their faces, basically.
I really enjoyed the season finale, not because it answered a lot of questions, but because it was incredibly cathartic and satisfying. The Fury ex Machina cranks pretty hard but I honestly have a hard time giving any shits.
The Destroyer weapon came back around to Coulson, Ward got only about half the ass-whupping he deserved (fingers crossed that the next person to get her hands on him is the Black Widow, because she heard he was talking shit) but I did clap and squeal with delight when May NAILGUNNED HIS FOOT TO THE DAMN FLOOR. The team's dynamics have shifted, they've been betrayed, they've been through hell, and I just want Coulson to pack the Destroyer gun forever more.
I do wonder, though, if this is one of those shows where you're going to tell people, "You know what? Just start watching at Season 2. Trust me."
What interests me about this season of Elementary is what we've seen Sherlock going through. He's faced some speed bumps in the road, and they're all about him losing people. He lost Irene/Moriarty at the end of season 1, of course, but he'd already lost her in the first place. This season has been about distancing (accidentally, mostly) Sherlock from the friends he's made. He's grown closer to his brother, only to have him ripped away at the end of the season. Joan is going to move out. One of Sherlock's only other friends died this season. We've heard of Miss Hudson, but we haven't seen her. We haven't seen Sherlock's sponsor, nor the young man he began to sponsor, except for that one episode (maybe another I'm not remembering, but they've been thin on the ground). Sherlock was built up in season 1, and season 2 has been about tearing all of that away again.
Joan isn't moving out to tear foundations away from Sherlock, she's moving out because she needs to separate her life from his. She doesn't quite realize how important Sherlock believes that she was to his process (if she had, she would have been working on getting him less dependent on her, I have no doubt). Mycroft twigs to it: Sherlock's afraid that he can't do the work without either Joan or drugs, and when he becomes certain she's going to move out his response is WELP I GUESS IT'S DRUGS THEN. It was carefully set up to show Sherlock's true downfall, playing off the false one at the end of season 1.
So here's what I suspect is going to happen next (this is based off what I know of the canon, and feel free to click away if you don't want to read guesses about next season):
Sherlock is going to fuck off to England, back to Baker Street. I mean, undoubtedly, he'll do some traveling and he may be in New York from time to time, but I suspect he's going to end up there, at least part of the time. Joan is going to either go back to being a sober companion or, and I find this a little more likely, get her medical license back. It's possible that one or the other (or both) will occasionally consult with the NYPD.
And either Joan will run into him while he's in New York and realize he is doing, like, all of the heroin, or Daddy Holmes will call her from England and be like "Pack a bag and grab your passport, you're going to fix my son again." Hijinks, naturally, ensue.