Corrected entry: In the scene where Sofia if peeling off David's facial mask after his reconstructive surgery, you can see that the mask is already cut in sections when she peels it off.
Corrected entry: Where the panel of doctors explain his injuries, they tell him he had a Le Fort III fracture which means broken facial bones on both sides of his face. But the left side of his face looks undamaged.
Corrected entry: When David and his friend are in the car and have just parked in front of David's building, David is just getting out of his car, and an employee of his is coming to talk to him, it is on a busy street with cars parked along the curb in front of the Mustang and behind it. The next shot, a long shot, the street and the curb is empty except for the Mustang.
Corrected entry: In the scene where Tom Cruise is searching for the portrait he drew of his girlfriend, he finds the picture of Cameron Diaz, he did not remember drawing, and it is Diaz who speaks to him from the bathroom. However, when the voice changes to Penelope Cruz and she then emerges from the bathroom, the portrait in his hand is still of Diaz. It should have reverted to the Cruz original.
Corrected entry: As the movie starts the voice on Tom Cruise's Alarm Clock is clearly Penelope Cruz's when he has not yet met her. Some people have said that given the nature of the film it makes sense, but it's explained very clearly by "Tech support" that everything AFTER the night at the club was part of the lucid dream (clearly signified by the multicoloured sky that morning). As such, even given that he's dreaming at the very beginning, it's a "normal" dream, so he shouldn't be able to imagine the voice of a woman he hasn't met yet.
Corrected entry: Near the end of the movie when they are going into the Life Extension building he is wearing handcuffs. When they get in the elevator he is still wearing handcuffs, but when the elevator opens, he no longer has the handcuffs on.
Corrected entry: In the scene where Tome Cruise is watching Conan O'brien on TV with the dog, it is daytime. However, in New York, Conan is on at 12:30 at night.