The top mistakes in National Lampoon's Christmas Vacation http://www.moviemistakes.com/film875 en Sat, 22 Nov 2008 06:55:07 +0000 5361 At one point when Clark is flying down the hill through snow drifts on his saucer sled after greasing it up you can see the guide wire pulling the sled. 5363 In an early shot of the outside of the house, the motorhome that Eddie and family show up in is parked in the driveway. The problem is, they don't appear until much later in the film. 5364 When the Griswold's are driving to the tree farm, they are being harassed by the rednecks in the truck.  Several shots of the front of the truck show only two passengers, but one view of the truck through its rear window shows three passengers. 12568 After Eddie et al arrive at the Griswolds, "Snots" is introduced. When everyone else has gone into the house, Clark is left outside with the dog. A shot shows the dog at Clark's side, and if you look at Clark's sleeve, he's wearing a sweater, but actually has on a windbreaker. At the end of the movie, Clark's wearing the sweater. Apparently the shot was taken of him and the dog, and edited back into the film early on. 10655 When the Santa Sleigh is launched in the air by the ignited sewage, the sleigh flies over the moon. Now on the DVD version of the film, it's not clearly visible, but on the VHS version, you can clearly see there's a box around the sleigh that looks like the sleigh is under a microscope slide.