Continuity: During the first car ride scene Harry is spitting the seeds out the window. One of the shots shown of the car from the outside shows the window still up after he has rolled it down.

Continuity: In the scene where Harry and Sally are having lunch in the diner (the orgasm scene), Harry's napkin is in his lap. You can see it when the camera angle is from the side showing both of them from the knees up. Every time that angle is used, the napkin is in a different place or altogether gone.

Factual error: When Harry meets Sally for the second time it is on a flight in 1982. But the plane is a second-generation Boeing 737-300, the first of which entered service in December 1984.

Continuity: In the deli scene when Sally is faking her orgasm, the camera movies to Harry. You can see the waiter approaching. When the scene is over, the waiter again approaches to take the order from the other woman (Rob Reiner's mom).

Continuity: When they are playing win, lose, or draw, Sally is trying to draw baby talk, and if you keep your eye on the drawing the baby looks different all the time and has eyes, and then doesn't have eyes, etc.