If you can see it in the theater, DO IT. It was totally made for the big screen.

If you have to go to the bathroom during the film and can hold it, DO IT. If you miss more than a second you're going to be completely lost.

Honestly though, I had no idea how long it was when I went to see it and when I looked at the time after it was over I couldn't believe I was sitting there watching it for two and a half hours...it only felt like I was in there for about an hour, hour and fifteen minutes at best. It's that engrossing.

I won't try to say it's the best movie ever or anything, but it's hands down the best film I've seen this year.