When Crawl and Rebecca first meet, he videotapes her from the door to her dorm room. In the following shot, we see a black-and-white shot from the point of view of his camera. Not only does it come from a significantly different location in the room, but also, Rebecca is looking well offscreen when she should be looking directly into the camera.
When Crawl is caught in the barn and chases Rebecca into the house, Mrs. Warren hasn't started cooking the turkey yet. Crawl then leaves and is picked up by Tracy and shortly after that, Mrs. Warren is serving the turkey.
After Zack explains to Crawl the rules of "his room," Crawl picks up Zack's sandwich from the desk and says, "I'm taking this back," and he is holding both sandwiches. However, when he makes the "tooth fairy threat" Crawl is again holding only one sandwich.
In the scene towards the end right after Travis leaves, Zack is holding up his right fist and making hand gestures after Tracy sits down next to him. The camera cuts to a different area of the room, but when it goes back to Zack, he is making the hand gestures with his left fist instead.
When Crawl arrives in South Dakota and is chasing the chickens, he almost runs into the pen where the bull is. When he encounters the bull, a wire can be seen pulling on the bull's horns to make his head move.