When Doug sits down with his food and tells the story, he puts the plate on the coffee table (8:02). In the next shot it is back in his hands and he puts it down again.
When Doug and Carrie go to the movies with the Milners, there are 4 films listed on the marquee: In Too Deep, Teaching Mrs. Tingle, The Blair Witch Project, and The Sixth Sense. The four discuss that Kevin Spacey is in the film that they are about to watch. Kevin Spacey was not in any of these films.
When in the restaurant, Mrs. Shropshire can be seen in the booth in close shots, but in long shots she disappears.