I don't think this movie could have been done any better. It is a must-see, but be prepared for a very tense and often very brutal two hours. As you can imagine, things build to a climax at the very end, and the movie ends the only way you could really end it. No Hollywood ending here.
Unlike
World Trade Center, which came off like a
TV movie of the week, this movie came off as being incredibly authentic. The irony of course, is that WTC should have been very accurate, as almost all of the primary characters in the story survived. Instead, the movie has been widely criticized for the inaccuracies in its representation of the events. United 93, on the other hand, was largely fictionalized out of obvious necessity. It's hard to imagine, though, that the events that actually took place on the plane could have unfolded much differently than they were depicted.
The fact that the flight didn't make it to its target is testimony enough to the fact that the passengers on board were heroes, but this movie does an incredible job of showing us what the experience must have been like.
There are no star actors in the movie, and that was a very good call. Name actors would have distracted from the story.