Continuity mistake: Just before Declan and Anna are going to sleep in the B&B, when she agrees he can sleep in the same bed he is holding a pillow. He then puts the pillow on the bed and the pattern on his and hers pillows are on the left side, however the next scene shows that his pillow pattern is on the right. (00:56:55)
Revealing mistake: During the scene where Jennifer Lopez does not have her body pillow, she has to use her friend/neighbor as a pillow so she can sleep. The nightshirt Jennifer is wearing allows you to see the fake pregnancy belly she has on.
Continuity mistake: When the three guys are having lunch, in one shot the traffic is at a stand still, but in the next shot seen in the reflection of the window, the traffic is moving fast. Next shot it is at a stand still once again.
Factual error: A fire breaks out in the hospital due to one of Abby's victims being exposed to sunlight as she's turning into a vampire, destroying that vampire and a burning a nurse to death. Modern hospitals have fire sprinklers, fire extinguishers, etc. and sensors/alarms that the fire would have activated.
Revealing mistake: In the scene where Rachel McAdams goes to Patrick Wilson's office to explain why she left the bar so abruptly the night before, there are four TV monitors behind her as she does those weird charade movements. Only one monitor has a picture. The picture is of the New Jersey anchors of the job from which she was previously fired. Also, the characters in the picture never move.
Revealing mistake: Throughout the film the actors' breath is visible. This wouldn't be happening during the summer when the film is set.
Continuity mistake: In Joanna's bridal shower she gives a necklace to Marni. When Marni is talking to her nanny the necklace disappear between shots.
Factual error: There's a scene where a woman's son and Kahn are playing on an Xbox. The movie was set around the time when 9/11 happened and the console was not even released at that time. You can tell from the controller they were using. It was white and had a battery underneath for wireless gaming.
Continuity mistake: In the scene where Cindy is about to have her abortion, we see a shot of the nurse holding her hand and the nurse has on purple latex gloves. In the next shot, the nurse is holding her hand without gloves.
Continuity mistake: When Stern is cutting Gutterman loose and they're at Rachel's desk, Gutterman is right behind Stern, close enough to touch the desk and sets his hat on it. The shot changes and Gutterman is now further away, not even in arm's reach of the desk.
Other mistake: The protagonist is still a kid, and she is telling in voiceover about all the things she vows to renounce hoping to have her dad back in health. On the porch she knocks repeatedly on the wood, but the magical numbers don't appear. (00:05:00)
Continuity mistake: When Charlotte Gainsborough has a meltdown telling the younger kid to remove the toy guitar, the kid is holding the toy differently between shots. (00:17:20)
Factual error: When they land back at the airport you see the door open and hear the sound of the engines. However at the rear of the left engine you see the engine cover (red flag moving in the wind) still in place. The engine cover still on while the engine is running could cause serious damage or it would be blown out. It would be removed during preparation checks.
Other mistake: The hospice male nurse Juan Is credited as Julio in the credits at the end.
Factual error: When the Senator is looking at the rent ledger, there are entries for each property as well as the date that money was collected. One of the dates is 2/29/74, yet 1974 was not a leap year. The only leap years in that decade were 1972 and 1976. (00:56:30)
Continuity mistake: When Charlie is coaching Sam in baseball at the beginning of the movie, they get on the road and he beckons to him. In the first cut, people in the background change (most obviously, a guy is crossing the street behind him, but vanishes in the second shot). (00:07:45)
Factual error: Close to the end of the film Michael Reed is traveling from Philadelphia to New York City by train early in the morning. The sun shines on his face from left side which is impossible in the morning, as the left side of his face faces west during that direction of travel (from south to north).
Factual error: A delightful movie that theoretically takes place in the vicinity of Portland Oregon, over a period of many months. The problem is, that at no time does it ever rain, and anyone who has lived near Portland knows it rains half of the year.