I enjoyed it, though I probably wouldn't want to watch it again. It is intense though.
Even though I'm sure parts of it are unrealistic, watching it in 3D on a massive screen is likely the closest many people will get to experience the sensation of being in outer space. And for that alone IMO the movie was well worth the $8-$12 price of admission (really, do you need to see the 800th superhero movie? Try something different).
I will also say I think it's the most impressive use of 3D I've ever seen in a movie (suck it Avatar). It's just one of those film's that was made to be enjoyed on the big screen.







