Continuity mistake: The hull numbers of the Constellation change throughout the film between CVN-74 and CVN-68.
Continuity mistake: When Lolita begins to undress in front of Humbert, she is wearing her school uniform. Her shirt first appears tucked in, then out and then in again.
Continuity mistake: Hester's estrange husband mistakenly kills a man at the end, and you see him cut his hair and his scalp off, then later when people find his body (after his suicide) his hair and scalp are intact. Then later you see him with the hair and scalp in his hands again.
Continuity mistake: When John's wife is in the bathroom she drinks all of the water in a cup, but when she throws it the cup is full again. (01:29:00)
Continuity mistake: In the scene where Rafe is fighting for Britain his plane gets hit. As it goes down into the water, it is day. Later when they show him swimming out of the plane and to the surface, it is night. (00:41:30 - 01:10:10)
Continuity mistake: In one scene when Cooper is choreographing the dance, his shirt is sweat-free. The next time you see him there's a big sweat stain on his shirt. (01:05:10)
Continuity mistake: Luca and his friend are chasing a bus and come down an old dirt road, Luca in a side car with a dog in his lap. The next shot, there's no dog, then the next shot the dog is back in his arms again.
Continuity mistake: Near the end of the movie, right before the semi-finals, they say that only eight men are left. When they introduce the men, they only call out six names.
Continuity mistake: When the family is getting into the car to go to the wedding one grandmother says to the other "let me in". The grandmother gets out to let the other grandmother in but the first grandmother never gets back in the car, she just pretends to. You can see her hiding behind the cars as it backs down the drive. Both grandmothers are in the car when they see Long Duk Dong on the lawn.
Continuity mistake: When Napoleon is waiting while Rico makes a sale, he checks his watch to see how much time he has before the dance. The first time he checks it, the date on the watch indicates Thursday July 17. When he checks it again a few minutes later, it shows Monday July 21.
Continuity mistake: When Mommie is cutting Christina's hair it keeps on changing from long to short several times.
Continuity mistake: After Casey has turned down Harvard and is skating on the pond, she falls many times. When she falls for the fourth and final time, her hat falls off. In an overhead shot, the camera even shows it laying on the ground above her head. When she gets back up upon seeing Teddy with the zamboni, her hat has disappeared. (01:12:05)
Continuity mistake: When the firefighters go to the house of the first backdraft "victim" you see that he has gone through the windshield of his car. But when we saw him opening his front door and getting hurled away from the house he didn't land anyway near the car.