Continuity mistake: In the scene at the little bar Bruce Willis kicks Billy Bob Thornton's chair over. Kate Blanchett picks Billy Bob up and tries to dance with him. A different angle shows Bruce Willis still at the table and the Billy Bob's chair is now upright.
Factual error: Two problems with the end of the movie - first, a doctor must declare death officially before bodies can be bagged, and second, the bodies cannot be moved until a full investigation is performed.
Other mistake: When Bruce Willis and Troy Garity get hit by the rental truck, you can see the car is a junked car. When Bruce Willis gets out off the passenger side door, there is no interior on the inside of the door.