Hell's Kitchen: a British man screams at people for forty minutes. This really wouldn't be compelling if I didn't like British accents so much.
Dexter: I actually don't think they went nearly far enough with this. Before long Dexter has pretty much just turned into a good guy; his victims are all unambiguously, unsympathetically evil so it's way too easy to root for him. The show tries too hard to make me like him, to the point where the show engineers a convoluted way for someone else to kill a guy he obviously needs to kill, just because that guy was really likable too and it'd just be too much for Dexter's image if he did the job himself. I'm talking about events near the end of season 2, by the way, as I haven't gotten to season 3 yet. I'll probably continue with it anyway, it's certainly not bad, but I'd really prefer it if the show got back to dwelling on what an evil, insane person Dexter is. This is starting to feel like the show where the lone vigilante does what the process of law can't, instead of the show where a murder-obsessed lunatic performs ritual killings for reasons that only make sense in his own internal universe.
24: Speaking of vigilantes, I am partway through the first season and only eight years late. Judging by all that I've heard, I was expecting a Marty Stu in Jack, but that's mostly averted, I think, or if it isn't then I'm prepared to accept it because Kiefer Sutherland sells it. Like Spider-Man, he will ultimately come out on top but he's a desperate, exhausted, overpowered mess all the way there and that does a lot to keep him from being annoying. Jack's smarmy superior, Mason, is pretty great too.
EDIT: Haha, I love Drazen's plan in the season finale. "We need to trick Jack Bauer into being absolutely livid with blind rage towards us so that he'll come after our lives. After that, things should be pretty good."