Open Water in Space, i guess: A lame story which fits on a coaster stretched to the excess before people would get bored to death. All solely carried by visual effects. The problem here, to convey the infinity wideness of space to the audience, you need a reference point, otherwise, all you could show is a black background with little light dots on. Obviously, you have to show the only reference point available over and over again: the Earth from 400 km above, and what you see is more or less the same, for 90 min..

And, honestly, Sandra Bullock in a space suit doesn't give me the slightest impression of what it would mean, to be in such a situation as an astronaut. Either you see a white space suit in front of the Earth, spinning around, or, you see a face from inside the helmet of a space suit.

The 'drama'-plot could be easily translated to someone being captured in a small room anywhere, that the whole thing happens in Space does not make any difference, plot-wise.

The possible ways to get rescued are crystal clear, either someone picks you up or you die. And if this wouldn't be boring enough for the viewer, there's only one possible way to die, no sharks, or whatever...and you can't die from being attracted by gravity! So even the title of the movie is a kind of stupid.

1 extra point for the nice Earth view CGI.