When insurance investigator Vicki Anderson hears that Thomas Crown earns money in arbitrage, she is ignorant of the term and asks its meaning. This seems scarcely credible, given her line of work and its level of sophistication.
During the infamous chess scene an overview of the board is shown as Vicki Anderson moves her bishop forward that shows that Crown has already castled, but it is not until later in the scene that he actually performs the move.
During the first getaway scene in the picture, the driver is seen driving westbound on the Massachusetts Turnpike a mile or so into the highway from downtown Boston. He's then seen *entering* the Pike from I-93 which would have happened prior to already being on that road. Subsequently, he's seen further down the Mass. Pike, once again somehow traveling westbound on it as he was before.
In the first scene with Erwin (Jack Weston) entering the hotel room, the door is unlocked as he comes in and when he closes the door, he steps inside and the lights come on. The door chain is shown as set or engaged although you never see or hear Erwin touching it. When he leaves, he doesn't seem to touch it either in the darkness, but it is already disengaged as he opens the door.
About ten minutes, thirty seconds (10:30), Carl goes to a payphone and attempts to put money in it, but it reads "Out Of Service". Everyone else waits for a payphone to ring, so why was he attempting to make a call? This is clearly an error.
The telegram that Thomas Crown sends to Vicki at the end of the movie essentially contains a confession to involvement in the second bank robbery. Unless he is fleeing to a country that does not have an extradition treaty with the U.S., the telegram would almost certainly be enough evidence to bring him back to trial, so he didn't really get away in the end, despite the implication in the film.
Around 22 minutes, "Erwin" (Jack Weston) drives into the cemetery in the Ford station wagon. Just before he stops, you can clearly see the rear window is up, as reflections are coming of the glass; however, as Erwin (immediately) exits the car and walks behind it, the window is completely down, as he reaches into it. Since the window was never shown rolling down, this is clearly a revealing mistake.
Around 22 minutes, "Erwin" (Jack Weston) drives into the cemetery in the Ford station wagon. Just before he stops, you can clearly see the rear window is up, as reflections are coming of if the glass. The camera angle never changes, either; however, as Erwin immediately exits the car and walks behind it, the window is completely down, as he reaches into it. Since the window was never shown rolling down, this is clearly a revealing mistake.