I saw the trailer for Gravity months ago, and thought it looked really tiresome. Then when it came out, I looked at the amazing rating it had at RottenTomatoes.com, and thought, Wow, I guess I should see this in 3D while I can. And then I watched the trailer again, and was reminded of how tiresome it looked. I was thinking, I don't want to sit through an hour and a half of that. (The trailer is mostly Sandra Bullock freaking out in the throes of a lot of disorienting action. It looked exhausting and yet boring at the same time.)
However, considering the great reviews, I went to watch it anyway, and I'm glad I did. I went in with the impression the trailer left on one hand, and the impression left by the reviews on the other, and was feeling ambivalent with conflicted expectations. But it was much better than the trailer made it seem. It was lovely, and sad, and also pretty exciting, as opposed to the unrelenting sensory barrage that the trailer made it appear to be.
I actually thought it lived up to the tremendous hype. It's one of the few examples where I could say that about anything.