I have to disagree with most here.

Rating: 9/10 (28 June 2008)

This movie was the best Shyamalan movie since The Sixth Sense. Most people don't realize that his writing style for this is less focused on the fear factor of a pandemic, and more on characters that are scared, but are mostly trying for a way to improve their situation and out-think the danger.
The dialogue in this movie was incredible, especially for Wahlberg, who usually just comes off as corny, actually had many lines that fit his persona, and fit his character.
The casting was great, the directing was great, the action was great, even the ending wasn't bad.
I think M. Night Shyamalan has finally matured as a writer.