I'm still very torn on Lost. I like it a lot, but I also rather hate it. It's still mixing some great storylines (Kate's, Sawyer's, Charlie's) with pure fucking tedium (Boone's, Sayid's, Michael's).
I'm getting very frustrated by things not just not getting resolved, but being flat-out ignored. They spend a couple of episodes agonising over a metal door in the floor, then ignore it. There's a mysterious French woman hinting at other people on the island... one guy visits her and it's over after that ("well, she's a guest star, she can't come back that often"). I don't really like the idea of multi-season story arcs because I think it's lazy and builds up an unjustified amount of speculation and hype that can only result in a damp squib -- see 24 (well, the thing that happened at the end of Season 2 specifically) and Alias for examples. I'm amazed the Polar Bear turned up again, thought they'd forgotten about that. But I really want answers, and soon.
On the one hand, you have what has to be one of the most brilliant episodes of anything I've ever seen with Locke's story, Walkabout. A really really REALLY good twist is one that survives the fact that you knew it was coming and STILL hits you hard. Someone spoiled Sixth Sense for me before I saw it. I knew what happened through every scene. But when the actual twist came, it still hit me. Ditto Locke. Certain scenes gave it away and I had it nailed, but damnit, watching that twist really got me.
It is good enough to stick with overall, especially since we're near the end now and they have to leave us with SOMETHING. Hurley's episode should be great. What I really like about the show and what I hope they accentuate is the Castaway/Lord of the Flies stuff, how people are all "breaking down" in the conditions.
EDIT: Oh and Jin is a fairly decently-sized extra in 24 as a CTU operative.