Continuity: When the police are driving Blair and her boyfriend, it is snowing. In the shot from inside the police car the windshield wipers are on . The very next shot shows the police car driving down the street and the windshield is clear and the wipers are off.

Audio problem: When the carolers come to sing for the Kranks, it is professional-quality singing. Then the neighbors join and you can hear that more people are singing, and the quality of the singing is realistically worse(the neighbors can't sing well.) After a few shots of the carolers AND the neighbors singing, the sound goes back to just the carolers singing, though you still see the neighbors singing on screen.

Continuity: When the carolers are outside singing, Luther and Nora are inside hiding. When they cut to Nora, you can see out of the window- there's nothing there. When she leans back up from getting her yarn, the head caroler is there with some others behind her. In the next shot, they are back in place in the choir. Even if they were right outside the window in the first place, there is no way they could reposition themselves that fast.

Continuity: When the daughter's boyfriend first enters the house to meet Tim Allen and Jamie Lee Curtis, his hair is covered in snow. Shortly after, the snow is gone but then reappears in another shot during the same scene.

Continuity: When Nora is driving down the road with Fromeyer at her window, he sticks his hands on the glass. Nora raises the window "catching his fingers". When looking through the windshield, you can see that the window is 3/4 of the way up, but when it cuts to the outside, it is just under the edge.

Factual error: When Mrs. Krank tries to snatch the Christmas ham in the parking lot of the grocery store, you can see trees with green foliage in the distance. Chicago never has green foliage on trees in the month of December.

Audio problem: Towards the end during the party we see a guy playing some sort of small pipe instrument. First of all, the timing of the moving of his lips on the instrument doesn't match the pipes heard in the music. Secondly, the lower notes that are heard in the music are heard when his mouth is at the shorter end of the pipe, which would realistically result in high-pitch sounds.

Continuity: When the Scouts come to sell Nora and Luther a Christmas Tree there's a Wreath on the front door, Luther says there not buying a tree. Right after that there out at the truck telling Fromeyer how Luther Stiffed the Scouts on a Christmas tree when that happens Fromeyer looks up at the Kranks house and there's no wreath on the front Door.

Continuity: Mr. Krank's coat was totally drenched by a car going through a puddle and it was completely wet. Subsequently, in the same scene, the coat was only partially wet, having quite a bit of dry area.

Continuity: Nora spends a long time trying to get a Hickory Honey Ham (because it is Blairy's favorite). Finally, Marty brings one to the party. After Blair and Enrique arrive, Nora puts some ham on his plate, commenting yet again that it is Blairy's favorite. Yet when Luther goes across the street, he takes *them* the prized Hickory Honey Ham - still in the can.