Continuity mistake: After their first time having sex, Sally gets up to go get some water. When she comes back, she gets back in bed with Harry and settles herself with her head laying on his left pectoral. There is a quick change of shot, and suddenly her head is much higher, with her head laying on his left shoulder.
Continuity mistake: During the dinner scene in the restaurant, Marie puts down her glass of cola on the table. In the next shot, she is drinking from the glass again.
Continuity mistake: When Harry and Sally are walking to the museum, telling their stories about their sex dreams, Sally does not have a brooch anywhere on her blazer. However, when they are in the museum, she suddenly has a round brooch on the left lapel of her jacket.
Continuity mistake: When Sally is faking her orgasm, the slice of meat on her sandwich changes the way it's folded over the bun between angles.
Continuity mistake: In the first deli on the way to New York, Sally slides the menu over the table and places it aligned with the border, very close to her. When the angle changes, it is skewed and several inches away and she is bringing it close again.
