Revealing: When Eddie leaves Frank's mansion, the "snow" wiggles on the driveway.

Continuity: The Christmas tree is still visible after it has burnt down.

Continuity: In the shot where it shows Lewis on fire, you can see it's not William Hickey, but a "younger" stuntman.

Continuity: In the opening scene where Clark and the two guys in the pickup are racing, Clark pulls under a 18-wheeler. In the close up shots, you can see the truck's tyres from under the truck, but in the far away shots, you can see the safety bars that were put under the truck for the stunt driver so he wouldn't ride up under the truck.

Factual error: When the Griswold family are going to buy a christmas tree, they are in the mountains. There are no mountains in the Midwest.

Continuity: At the end of the movie, when Clarke is outside of the house with Eddie's dog, all the police cars have disappeared.

Revealing: When Clarke and Ellen are in the bed and Clarke's hands are sticky, you can see that he actually grabs her hair to give the illusion that they are stuck.

Continuity: When all the family is outside to see the christmas lights, there is an aerial shot of them. Clarke starts to say "Joy to the world" before you actually hear him say it.

Continuity: When Clark finally opens the christmas lights, he has the wires in his hands. The shot later, when all the family comes, the wires are not there and his arms are wide open.

Visible crew/equipment: When Clarke is on his sled, just before he crashes into the cabin, the shadow of the camera is visible on it.

Continuity: At the beginning of the movie, the Griswold family makes marks in the snow when they arrive at the tree which Clarke wants. A shot later, the marks are bigger even though they haven't moved.

Revealing: When Clark starts to set up his Christmas lights, there is a scene where the ladder collapses. If you look closely you can see the wire coming out from under his jacket to keep him from falling forward.

Continuity: When the squirrel is being chased by Eddie's dog, it passes through the broken door and then vanishes.

Continuity: When Clark is outside hanging the lights, he staples the sleeve of his shirt, under his wrist, to the eaves of the house. In the next shot, as he is pulling, the shirt is stapled over his wrist.

Revealing: When Clarke notices that Lewis has caught on fire, he's only burning when he pushes him on the ground.

Continuity: In the scene where Eddie and Clark are drinking egg nog, Eddie knocks down the decoration with propellers on it. When Eddie walks to the table with the nuts on it the camera shots cut from Eddie to Clark attempting to fix the decoration. In each shot that we go back to Clark, the number of propellers left on the deocoration change even after Clark has given up fixing it.

Visible crew/equipment: When Eddie and Clarke are putting the burned couch in the garbage, you can see the shadow of the camera following them.

Revealing: In the scene where Lewis's coat catches on fire after the Christmas tree explodes, the square on his coat that holds the "fire" is evident.

Revealing: Leaves can be seen on several trees around the Griswold house, which is supposed to be in Chicago and its obviously supposed to be wintertime.

Revealing: When Clark grabs the curtain to smother the fire on Louis it is a much younger stuntman with dark brown hair.