Anyone who hasn't seen this movie, SEE it.
Stop *****ing about "the mystery of the mist" being ruined, that's not the point of the film at all. The point of the movie is actually a very poignant examination of human nature and our reactions in the face of the unknown, cross-laced with some great monster movie segments. In fact, the closet films I could think of to compare it too would be "John Carpenter's The Thing" and, to a lesser extent, "Night of the Living Dead".
In terms of casting, the film is perfect, Thomas Jane in particular. No really big, beautiful stars, but a lot of great character actors that eat up the material and throw themselves into the story. The production is also terrific, the monsters scary and disturbing, and Darabont's use of music (or lack thereof) give it a creepy edge that REALLY keeps you on the edge of your seat. Even if you've read the story, you're biting your nails.
It's the ending though, the ending that TRULY makes this movie superb. Why? Because it finally emphasizes a point that's long needed to be made, the point that while our negative aspects and intentions can be our doom, our positive aspects can be just as dangerous. I won't say word about it, but God if it didn't just. . .
Anyways, this is easily the best horror film of the year, and probably the best in the past five years, and the really great thing about it is that it's a film that plays by the older rules. It isn't splatter porn, it isn't J-Horror, it's a movie that simply scares you because you realize "there's a good chance that's how I would react".
Oh, and to add a little caveat, this movie pretty much affirms that Darabont adapting Stephen King equals gold.
I'm looking forward to seeing this.
Although I'm considering watching it in the Black and White that Darabont intended it to be.