I don't see how this was supposed to be a great movie. Don't get me wrong...The story was great, and so were the concepts, but the dialogue was so poorly written that I couldn't take the rest of the movie seriously. People say "smart" things to each other, but they're totally unrealistic. In a moment of fear and crisis, Mel Gibson says "I want a cheeseburger with bacon." Then he gets mad and steals some of his kids' food, then cries. Seriously? At the beginning of the movie, I felt that too much was happening too quickly. It was very interesting, but it could have been done in a better way. The actors' lines are designed to sound smart, but nobody would actually talk like that if they were in that situation. Also, the suspenseful action seems to stop just so Daddy can tell his kids how they were born. It's supposed to sound touching, but it could have been so much better. The kids seem way too fearless. The end of the earth is near, and the look on their faces just seems too numb. Mel Gibson's acting is OK, but it could have been more convincing if they gave him better lines. The presence of great-movie potential was there, but it seems like they randomly start talking about random stuff at the wrong moments. They talk about great symbolic things, but it's at the wrong moment! But on the bright side, the story is really good (it just could have presented better) and it had some suspenseful edge-of-your-seat moments.