I agree PG, we can have very similar dreams to the previous nights dream but they're not reccuring in it's entirity there will always be subconcious changes in the dream that are beyond our control. Say for example you have a dream where you get with the girl of your dreams (for the purpose of this example, I'll use Kelly Clarkson) You nail Kelly Clarkson and find yourself dreaming the "same" dream the next night you then subconciously will change events, because you will perhaps just hurry through something meaningless and insignificant to your mind such as dinner, watching a movie, getting your hair cut ect. The dream is now not the same but similar therefore the only thing reccurring is the theme. I've had many cases of this happening to me, sometimes 1 thing changed, othertimes many things changed in my dreams but the theme was always the same.

Whats scarier in my mind is how two people can dream about the exact same topic/thing (in particular, each other) when not even in the same country. I've experienced it and it has made me feel a little strange but it was at the same point strangely awesome to think about. I wonder if others have felt this experience?