Continuity mistake: In a couple of close up head shots of Paul Bettany in the final match, the tag in his shirt is visible. In one shot the size of the t-shirt is L (large), in a later shot within the same scene it says M (medium).
Continuity mistake: When Holly is meeting Ben for the first time and Holly's friend says, "Sounds like she's not into romance," Holly is eating a spoon of ice cream in the shot from the front. However, in the shot from the back, Holly's hands are on the table.
Continuity mistake: Just after Nick finishes the first part of his story where he says Gatsby was his neighbour, Nick stands in front of the right hand side window. It then cuts to inside the sanitarium and he is suddenly standing in the middle window. (00:05:20)
Continuity mistake: When the bus is about to pull out of the station Ellie places her suitcase on the overhead rack, and in the next exterior shot we see the license plates at the front of the bus, then it cuts to a closeup and one of the plates has changed from "F8274" to "G8278." (00:08:40)
Other mistake: When Fry and Colleen are lying in bed, his hand is around her shoulder but it is the same colour of Colleen's skin. (00:04:25)
Continuity mistake: In the scene where Wyatt and Gary are taking Deb and Hilly home in the Ferrari and Porsche, Gary is being pursued by the police. When Gary approaches the railroad tracks, the train is shown coming in the direction of the passenger side door. When they finally cross over the tracks, the shot is flipped, and the train is seen to have crossed the intersection in the direction of the driver's side door. (01:19:25)
Continuity mistake: When Major Pollock sits down at his table in the dining room, he takes the napkin's ring off and after it falls he places the ring on the table and the napkin on his lap, but when John says, "Good morning," the Major's napkin is rolled in its ring and back on the table, then it's gone again. (01:35:00)
Continuity mistake: When the Privates are having their furloughs authorised, Colonel Sangston walks in with Corporal Cannon. Only those two men walk in. Corporal Cannon moves from the doorway to give Desmond Doss his rifle leaving no-one by the doorway. After Desmond refuses to touch the rifle, the Colonel shouts at Desmond. Out of nowhere Captain Glover mysteriously appears in the doorway. (00:48:40 - 00:50:10)
Visible crew/equipment: After Rick is introduced to Lew Eisen, when Eddie/Joe sees Lew he tries to evade him. When Rick catches up with Eddie, there are at least five actors' T-marks visible on the ground. (01:29:20)
Continuity mistake: John Heard's racquet jumps from one hand to the other when he and Tom Hanks fight on the tennis court. (01:17:20)
Continuity mistake: When the cops first pull up beside the BMW and Jack pulls a gun out to shoot the cop with the shotgun, he hits a bump and blows the cop car's tire, causing it to flip. They show it flip behind the BMW, but the other 2 cop cars (on the passenger side and behind the BMW) have disappeared. (00:27:25)
Continuity mistake: When Belinda says "nice sweater" to Jamie, Jamie has a backpack on. When Jamie walks away, her backpack disappears. (00:11:55)
Continuity mistake: A few brown smudges appear on Alice's note, written on a torn page from The Merchant of Venice, after Bella finds the book. (01:00:20)
Continuity mistake: During the scene where Zac Efron is talking to his girlfriend for the first time in the cafe, the reflection of her in the window does not match what she is doing in the scene. (00:25:30 - 00:25:35)
Revealing mistake: In the chase scene about an hour into the movie, Robert Loggia is shown entering the Liberty Tunnel, driving on a wet road. Note the vaulted round ceiling of the tunnel. Next, we see a series of shots of him in the tunnel, and then a shot of the sun rising over Pittsburgh as he is about to leave the tunnel. Here is the problem - the sunrise shot is taken from the Fort Pitt tunnel on a different day. Note the dry road, the barriers to the driver's left at the tunnel exit and the Fort Pitt bridge straight ahead. There is no place for the driver to make a left turn out of this tunnel. Also note that the POV is from the left lane. All the Liberty Tunnel shots show Loggia in the right lane. The next shot shows Loggia exiting the Liberty Tunnel and making a left turn from the right lane, causing a pile-up. (01:11:10 - 01:12:20)
Factual error: At one point, a screencast of a computer screen shows a video of Barry Brickman on the desktop environment of Windows XP (operating system, developed by Microsoft, released in 2001). However, the app that plays the video is QuickTime for Mac (which runs on Mac OS only), not QuickTime for Windows (which runs on Windows XP). These two versions of QuickTime are almost identical in every respect, except for their title bar (the narrow horizontal area above the video). (00:19:15)
Continuity mistake: When Alita is playing the street version of motor ball she knocks over Tanji. In the next shot Tanji is following her in the pack as she scores, then the shot switches back to him on the ground.
Continuity mistake: Allen drives through a spotless park, but, when the angle cuts, a flock of pigeons appears ahead.
Other mistake: Michael McShane's name is spelled wrong ("Micheal") in the opening credits.
Visible crew/equipment: After Matthew and Elizabeth take the pills to stay awake, when they are found Matthew shouts, "David, don't let them touch her," and there's a visible T-mark taped to the floor in the overhead shot. (01:31:30)