Well, I'd have to agree... the previews give far too much away. Every time someone got sucked up into the sky I recognized the scene from the previews, so I wasn't at all impressed.
I'll have to agree with a 1.5 for this movie, but that car accident earned most of that. Such a pity that this was such a poor movie, I really like that actress. I'll agree with some of the previous sentiments, though - they certainly think the audience was idiotic.
My biggest, concern, however, is that the entire premise of the movie was.... avoided?
Anyway, waste of time and money, in my opinion... but then again, what do I know
Edit: Bah, for whatever reason I can't get the spoiler tags to work... That was a bit more in depth