Goofs

When Simon is in the hotel in Baltimore, he rips his cast between the thumb and index finger. Upon the return to New York, when Carol is exiting the car, the cast is clearly and repeatedly seen to be intact.

When Melvin and Carol walk past the bakery at the end of the movie, the lights come on and the staff in the bakery can be seen working. Before the lights came on, the staff must have been working in pitch black.

When Carol and Melvin are talking in the restaurant before the trip to Baltimore, Carol folds up the pages of the "Thank you" letter but they are immediately unfolded again.

When Melvin takes Simon soup, it is past 3:00 a.m. In the next shot, Carol is up writing Melvin a thank-you letter on the same night. Then the clock reads 7:20, Spencer is still up, and Carol and her mother are just preparing to go out for the evening.

When Simon spends the night with Melvin, Carol calls and Simon picks up. When it's time for Melvin to talk to her, Simon supposedly sets the phone on the table for him to pick it up. But, when Simon does this, there is a sound of him hanging up the receiver, not setting it aside. When Melvin walks over to it, he picks it off the table as if it had always been there.

(at around 2 mins) Melvin turns on the kitchen light, then he opens the refrigerator door. The refrigerator interior light does not turn on. It is dark when Melvin grabs a bottle of water.

The light likely was burned out, and Melvin had not gotten around to replacing it.

(at around 1h 4 mins) When Melvin visits Simon late at night, both men appear momentarily distracted by Simon's front door banging.

It's not out of the ordinary for people to be distracted by an unexpected noise.

Carol comes to talk to Melvin at his apartment in the middle of the night when it's raining. Just after she turns towards the camera during the long pause in their conversation when both of them are staring at one another, a drop of water can be seen falling from the ceiling on the right hand side of the shot. It is raining outside, but there is no indication of a leak in Melvin's apartment.

Apparently the leak had just worked its way into the apartment; it obviously has to start at some point in time.

When Melvin picks up Simon's dog and it urinates, the stream of urine can be seen coming out of Melvin's gloved index finger.

When Carol asks Melvin to take her and Spencer to the hospital in his cab, Melvin shouts at a group of school children. One girl runs to the front with her mouth wide open. She is clearly instructed by the school the teacher to do this.

When Melvin walks to Carol's restaurant for the first time, he is seen avoiding cracks in the sidewalk as he turns a corner. There are spectators in the background, on the sidewalks and in the street, watching the movie being shot; not the normal NYC crowds.

As Carol gets in the Saab to go to Maryland, the driver's seat belt is caught in the head rest, causing Carol to have to duck underneath. Later in the trip it isn't. The head rest would have to be removed to be able to remove the seat belt, not an easy task on their road trip.

When Carol tells Melvin that he can bring the dog into the restaurant, her mouth isn't moving.

When Simon first meets Carol, she sees his scars from being beaten by the men robbing him. As he is telling her the story, the camera changes as he says "I almost died," right before Melvin cuts them off (to finish the small talk in the car). Simon's voice does not match his mouth as he says this.

When Melvin and Simon both coax Verdell to come to them, Simon holds out the bacon and says in baby talk, "Oop" twice. But the second time he says it, his mouth does not move.

When Carl pulls his car over to the curb where the guys are standing he tells his friend over the speaker-phone "OK, I just found a model", but his mouth does not move.

When Carol is waving goodbye to her son, there is a reflection of camera equipment clearly visible in the window.

During the scene with Melvin on the pay phone, a sign for the Holland Tunnel is visible when he, Carol and Simon should in fact be on their way back to New York.

When Carol and her mother are at the kitchen table.

When Carol takes the train to see Melvyn, after getting out of bed and for the sole purpose of telling him she won't sleep with him, the LED sign on the subway car she is riding says, "Subway Shuttle: Out of Service."

Despite his OCD leading to forced hygiene, Melvin touches several door knobs with his bare hands during his visit to the psychiatrist.

After confronting Simon about his missing dog, Melvin Udall returns to his apartment. The first lock he mistakenly turns 6 times instead of 5, rather than locking it, it remains unlocked. The next couple locks he counts 5. Light switch 5 and counts out loud.

Carol calls Melvin before the trip and asks him if she should pack something to dress up. Melvin is packing (with a checklist) and has a lot of stuff laid out on his bed and says yes. Yet when they get there and go to a fancy restaurant, he has to buy a suit jacket and tie because he didn't bring either one.