The Mist was surprisingly good. As per the course, I can't give away too much of the story without giving away the movie, but I can say it was a decent mix of scary movie with human drama and conflict. The cast, from the Punisher to Detective Pembleton do an excellent job. Throw in a couple decent King references and heavy amounts of atmosphere (figuratively and literally) and you're in for a good flick. Don't read any descriptions or synopses, just go check it out.
[Comments open for discussion for those who have seen it, so, may contain spoilers for those who haven't.]