Continuity: During the chase scene, where the people on motorcycles are pursuing the car, they shoot Julian Moore's character. The first shot shows a view from the inside of the car, and the windshield covered in blood. However, when they come back to that shot (after they show her dead), the windshield is clear of blood.

Revealing: The ping-pong ball that Theo and Julian pass between their mouths is lit inconsistently with the lighting in the car. It also moves independently of the confines of the actors' mouths. The ball was digitally added after filming this scene.

Revealing: The infant baby was computer animated in every scene in which the face appeared. Even the feet were obviously touched up by computer in the hallway scene. The lighting isn't quite right, the skin texture isn't quite right, and the child's face is just too animated.