I came across this article after searching for cognitive psych related subjects such as memory, perception, etc., and found the subject quite abnormal. The connection between perception, hypnosis, nightmares, and hallucinations has all been likened in one way or another to the thousands of alien abduction stories that have been told over the years.
Something that struck me as particularly interesting in the article was the comment on the research that shows a negative correlation between confidence and the accuracy of a memory. The blame placed on hypnosis and the suggestive, influential effect it can have was also note-worthy, especially considering the effects such a thing has on those with confusing psychological disorders such as Dissociative Identity Disorder. All of this helps to shed a little light on such an odd, seldom thought of phenomenon.