Continuity mistake: In the trailer, there is a scene showing Matt Damon in a fight. The other person pulls out a knife and cuts Damon on the right side of his face, leaving a big scar. In the next scene of the same commercial the scar changes from the right side of his face to the left side and then back again.
Factual error: When Meg Ryan goes to visit her mother in Big Bear Lake, the mountain is on her left hand side. If you drive from Los Angelos to Big Bear the mountain is on your right hand side, therefore she was driving down the mountain instead of going up it.
Continuity mistake: When Eric Roberts reaches for the gun on the roof, he's wearing the jacket of his suit again, when he took it off 20 minutes before.
Revealing mistake: A policeman fires during the robbery even though the slide on his automatic is visibly locked back and open.
Continuity mistake: When we see the police officer checking the hit counter on an adult web site, the hit counter goes down from 1,739,986 to 1,739,944 a few seconds later.
Plot hole: Towards the end of the movie when Michael Douglas makes his speech at the White House, he is able to quietly walk out of the gates with no reporters anywhere trying to chase him down. Totally unrealistic (especially considering what had just happened). (00:03:03 - 02:13:40)
Continuity mistake: Luke McNamara is handcuffed behind his back at the police station but as he is loaded in to the ambulance he mysteriously is cuffed in front. [The handcuffs inside are normal police issue handcuffs and outside as he's getting into the ambulance they're attached to a belt, normally used for criminals they consider dangerous.]
Continuity mistake: When Ray gives his girlfriend the present right at the start, her bag moves up her arm when the shot changes. (00:01:10)
Continuity mistake: In the hospital scene, Audrey's mother is sitting down with the bed table to her left. We see her start to rise, but when the shot cuts, she's suddenly standing at the bedside on the other side of the table, with no time transition included for her to get there naturally. (01:57:30)
Continuity mistake: In the scene where the Dr is explaining that his daughter might be a lesbian to Helen Hunt's character, when they move over to the desk area Helen's arms move from both hands leaning on his chest to only one back to both.
Continuity mistake: During the chase scene at the end of the film, P. T. Boomer (a character cut from the film), can be seen on top of Diesel 10 during the shot where he enters a tunnel.
Continuity mistake: When Dawn goes to see Dr. Parella when she has the urge to cut with the piece of mirror, she cuts in the stairwell and then throws the piece of mirror on the floor. There is a distinct smashing sound that would indicate the glass has been shattered, however when Dr. Parella goes to the stairwell, the piece of glass is completely intact.
Continuity mistake: Harry stands on top of a building with a girl folding paper planes. The plane they fold is folded with a blunt front. He throws it off the building and then the plane flies, all of a sudden the nose is sharp, this is visible. (00:12:10)
Visible crew/equipment: When the car is sitting in the back of the trailer there is a cable visible connected to the front of the car. In the next scene the cable is gone.
Revealing mistake: In the first morgue scene the body on the table is obviously breathing.
Continuity mistake: In the scene where Miter is planning to escape from the army and Bozz tries to stop him, watch the red mark on Miter's neck. It miraculously disappears and reappears many times. (00:45:05 - 00:48:30)
Visible crew/equipment: After Cherie falls off her bike, because the limo almost hits her, as the chauffer opens the limo door, a crewmember is reflected in it. (01:18:45)
Plot hole: When Captain Towers gives his XO an injection to allow him to die in peace, he, properly, swabs the site with alcohol, and slips the needle into the vein. However, immediately below the injection site, is a hep-lock.a port installed into a vein to allow injectables to be administered. I cannot imagine that a senior Naval officer would be so ignorant of the port's function.
Visible crew/equipment: At the part when Saffron Burrows is crossing on the opposite side of the street, you can see a camera crew off the reflection of every car they pass.
Continuity mistake: When Gene Hackman is helping his wife zip up her dress her hair goes from hanging straight down her back, to being over her shoulder. It cuts without giving enough time to assume that she moved her hair.