I had a really tough time with this movie. I want to say I really enjoyed it because I did. But I was still a little disappointed with it. The book that this is based (very loosely) on is incredible. It's one of the best books I have ever read. There is virtually nothing in this entire movie that resembles the book besides the title. I'm trying my best to be objective and look at the movie as its own separate entity but I'm having some trouble doing that. That's making it very tough for me to decide exactly how I feel.
All that being said, I think this movie is totally worth a trip to the theater. It's exciting, thought provoking and extremely intense. I'd argue that it's the second best action movie of the year so far falling behind Fast 6. There were multiple moments where I found myself holding my breath without even knowing. During the opening scene in Philadelphia I was grabbing the arm rest so hard that my fingers hurt.
The basic plot surrounds Gerry Lane (Brad Pitt), a former United Nations employee, from the moment that his family first experiences a dangerous outbreak. He is then sent around the world looking for answers as to what started this outbreak and how to stop it. The end is a touch anticlimactic but it's still a very enjoyable film. Just don't waste your money on the 3D version. There's no benefit to seeing it in 3D.