Continuity: Tom Hanks' character is on the yacht talking to his father. Tom is mixing up martinis, he pours them, and he adds an olive to one, and then an olive to the other. The camera cuts away to his father and then cuts back and now the second martini has no olive, so Tom adds an olive again.

Continuity: Tom hands the little girl a red ring to toss on the bottles and you see a green one land (different colour ring leaves her hand and lands on the bottle).

Continuity: In the dinner party scene where Meg discovers who Tom really is, they are seen walking around a buffet table filling their plates with food.  The food on Tom's plate changes in quantity and placement of items on the plate from scene to scene.

Continuity: When Tom Hanks comes to visit Meg Ryan, when she's sick, he brings her flowers. He goes to the kitchen to put the daisies in a vase, and on the table Meg Ryan is sitting at there is a runner neatly laid out. Then when Tom Hanks brings the vase over to the table, and they converse back and forth, the camera zooms out to show the whole room. The runner is suddenly bunched up and neither of them have been on that side of the table.

Continuity: In the scene in which Tom Hanks meets Meg Ryan in the coffee shop when she's waiting for her e-mail friend, Tom Hanks takes of his overcoat and in the next scene he takes it off again.

Continuity: After Kathleen (Meg Ryan) and Joe (Tom Hanks) talked about what it would have been like if they hadn't been enemies in the book business, Kathleen says she has to go and heads off to her apartment. During this time, the camera switches back and forth between Joe and Kathleen. Kathleen's right sweater sleeve cuff is by her wrist in one shot and rolled up by her elbow in the next. In the next shot it goes back down again.

Continuity: When Joe Fox is thinking about going online (the scene where he is going in circles), the laptop is in the middle of the desk. However, in the over the shoulder shot, when he logs on the laptop is at the edge of the desk. This occurs several times in this scene.

Other: In the scene towards the beginning of the movie where Meg Ryan is at Starbucks, we see her order, wait briefly, then the coffee is given to her. She never pays for the coffee.

Continuity: When Kathleen is waiting for NY152 in the coffee shop, she arranges the book with the flower on top so that it can be easily seen by anyone entering the store. However, the rose starts to fall, so she places it inside the book and turns the book sideways. However, after Joe enters in the very next shot, the rose is on top of the book, (facing the wrong way) which she proceeds to picks up to hide her face.

Continuity: When Kathleen and Frank are walking to the party where she meets Joe Fox, they are wearing coats because it is the fall. When they get to the party in an apartment, they don't have any coats on. Where did they go?

Continuity: In one of the early scenes where Joe Fox and his girlfriend are having breakfast, Joe's orange juice carton moves around the table by itself. Joe's glass seems to refill itself in an instance without any juice leaving the carton and when Patricia throws a newspaper on the table, Joe is holding his glass in his right hand; in the next shot it's in his left. At one point Joe puts the glass down on the table and in the next shot picks it up from the top of his newspaper.

Continuity: In the scene where Joe and Kathleen are eating at an outdoor cafe, the shot of the whole cafe shows it to be extremely windy, but the very next shot of them close up, there is no wind at all.

Continuity: When Joe goes to Kathleen's house when she's sick, there are used Kleenexes in front of the box on the right side of the table and the fruit basket. Joe is in the kitchen making tea, but when he comes into the room, it shows the table again and the Kleenexes are gone.

Continuity: When Joe takes his aunt and brother to The Shop Around the Corner, Joe is holding two bags of water, each with a goldfish in it (from the carnival) However, in the book store, George asks who belongs to the fish, but there is only one bag with one fish. None of the other characters are holding a fish. What happened to the other fish? On the way out of the book store, Joe has two fish again.

Other: In the opening scene, where Tom Hanks is in his kitchen fixing breakfast, narrating his email to Meg Ryan, he says that his dog Brinkley prefers to spend all day sleeping on a green inner tube (doggie pillow). But when the dog is seen curling up on his special "Brinkley" pillow a few seconds later, the pillow is blue.

Continuity: In the scene where Meg Ryan is waiting to meet her online friend (Tom Hanks), she has a book and a rose to identify herself. As time goes by, she puts the rose in the book. The camera cuts away from her, when it returns to her the rose is sitting on top of the book.

Continuity: As Tom Hanks and Meg Ryan are having lunch while discussing "NY152" the lemon on the plate of food moves and disappears.

Continuity: When Joe Fox and Kathleen Kelly are sitting at the outside cafe, you see a woman with a red cart walk by twice.

Continuity: When Tom Hanks is agitated over how to explain his absence at the Cafe Lava, he paces back and forth while looking at his computer. When there is a close-up shot of the computer, we see his chair is right in front of it. But when he returns to sit down, the chair is way off to the side of the screen.

Revealing: There are several scenes where her and Tom Hanks' computers do not have any telephone wires attached to them. They are in an era where they were using AOL dial up, as heard by the connection. They were not using wireless.