NancyFelix

Continuity mistake: When Kate tells Leopold that her Sundays are spoilt because the day after is Monday, she cuddles herself against his chest twice in successive shots. (01:21:10)

NancyFelix

Continuity mistake: When Kate comes back home after the punctured dinner with J.J., her hair is freshly done. Even if she had ample chance to do this, it's out of the question that the rather messy style she had chosen for the dinner was not intentional on such an important occasion, and there was no reason to change this afterwards. (01:00:25)

NancyFelix

Continuity mistake: In the hospital Stuart tries to grab his neighbor's phone. When he detaches him from his life support and alerts the nurse he holds the receiver in his right hand. The camera changes to a shot from behind, and he picks up the receiver again with his right hand. (00:39:50)

NancyFelix

Continuity mistake: During the dinner at her place Kate has both her sleeves pushed up to the elbows, but after she takes some dishes to the kitchen there's one brief shot from behind where the right sleeve is pulled down. (00:37:40)

NancyFelix

Continuity mistake: At the dinner at Kate's Charlie stands up to prove his manners. His fork is empty, but when we see him standing there's some food on it. (00:37:20)

NancyFelix

Continuity mistake: Hector, the little boy who spends his afternoons at Stuart's place watching TV, is eating from a bag of 'pirate booty' in his lap when Leopold sees him. When he offers Leopold some, the bag is suddenly next to him on the sofa. (00:31:10)

NancyFelix

Other mistake: On the first day at Stuart's apartment Leopold wears some green 19th century trousers he wasn't wearing during his time travel, and which surely weren't part of Stuart's wardrobe. (00:30:05)

NancyFelix

Continuity mistake: When Bart lays a turd at a tree, the leash is wrapped tightly around the trunk holding him back, but after he is done he moves on forward, while the leash disappears at the top of the frame. (00:25:00)

NancyFelix

Continuity mistake: When Leopold leaves the apartment with Bart, the leash roles itself up in several loops between shots. (00:23:20)

NancyFelix

Continuity mistake: In the first heated discussion between Leopold and Stuart a pen suddenly appears behind Stuart's right ear. (00:17:15)

NancyFelix

Continuity mistake: When Stuart is on the phone with Kate and tries to explain who Leopold is and why he is with him, the clock on his wall moves back by about two minutes when she sits down. (00:13:25)

NancyFelix