If anyone has read The Mist by Stephen King, then they could see how interesting this could be as a movie.
The premise is that a scattered group of townsfolk are trapped in a super market when a mysterious mist (hence the name) rolls in and brings with it some, well, unfriendly things.
I wont spoil it for you (although the trailer does a good job of it for me) but it does remind me of time when a buddy of mine and I were heading through a somewhat dangerous part of L.A. when we got cornered by a group of gangsters. This ‘friend’, as I refer to him in type now, unceremoniously pushes me forward toward the group, vaults the wall we were against, and disappears into the alley. I was seriously standing their with a classic ‘what the fuck’ expression at the behavior of my friend; enough so that the gangsters were even saying “Man, thats fucked up.”
Turned out that they were only playing, and let me use a phone to call a real friend to come and get me. It was an hour before she showed up but my and my new gangster friends passes the time by playing Super Punch Out on the SNES (at which I sucked at).
OK. Enough reminising. If you are interested in it, I would suggest reading the book first as the book is always better then the movie. But if you just like movies (or cant read, which if you cant then why are you reading this post?) then by all means just see the flick. Either way you won’t regret it. Until, that is, you go to sleep that night, anyways 
-Cheers