According to Stephenie Meyer’s web page, the idea for her best-selling Twilight series came to her in a dream:
I woke up (on that June 2nd) from a very vivid dream. In my dream, two people were having an intense conversation in a meadow in the woods. One of these people was just your average girl. The other person was fantastically beautiful, sparkly, and a vampire. They were discussing the difficulties inherent in the facts that A) they were falling in love with each other while B) the vampire was particularly attracted to the scent of her blood, and was having a difficult time restraining himself from killing her immediately. For what is essentially a transcript of my dream, please see Chapter 13 (“Confessions”) of the book.
While I find what little I’ve read of the Twilight series is painfully bad, the actual concept behind this dream – a vampire who is torn between love and his monstrous instincts – is pretty decent drama. My only real objection to the concept is that it had already been done very well in the TV series Forever Knight, which had all the angst and drama that the Twilight series wants to have but goes a step further by adding sympathetic and interesting characters as well as some decent pacing.
I have never had a dream about a sparkling vampire falling in love with somebody. If I ever do, I will never create a novel out of it, since the fiction market is oversaturated with Twilight wannabes these days. I have, however, had a number of pretty crazy vivid dreams of my own. Here’s a quick list of actual dreams I’ve had that maybe have the seeds of a semi-decent story in them. The list is in no particular order, and I’m going to go ahead and claim copyright on all these dreams – so don’t go stealing my hallucinations and passing them off as your own.