Sandra Bullocks character is excessively annoying, clumsy, and a nuisance -- while clooney is so excessively calm to the point where it doesn't even seem plausible.

The first 1/3 of the movie is dominated by Sandra Bullocks excessive hyper ventalating-like breathing patterns, and mini panic attacks.

The second 1/3 of the movie is her basically screwing up and/or breaking everything she comes into contact with.

The other thing that bugged me was that everything seems to be CGI, nothing looks quite real at all.

Anyway the idea of the film seemed good to me. I haven't seen anything quite like this movie, though I do not watch a lot of movies.

So if you can get past these annoyances, I'd say its worth the watch.