I just came back from United 93, and I think it's a great movie. All of the characters are genuinely human. Even the hijackers aren't made into stereotypes. The passangers on the plane weren't portrayed as heroes exactly in a cliched way, but as people who found themselves in a very difficult situation and did something about it. I loved the fact that it doesn't stereotype anybody. There is a particular scene where passangers call relatives and friends and tell them they love them. Had it been an inexperienced director, the scene would've come off as cheesy or corny, but Paul Greengrass makes it genuine. I truly recommend this movie. However, if you simply cannot stand slow movies perhaps this one isn't for you. The first hour, though vital to the story, moves at a very slow pace. Although the last hour more than makes up for it.