In the dream, I was watching some kind of fantasy/surreal movie with my family, and one of them (I don't remember who) asked what the movie was based on. I distinctly remember in the dream "knowing" who wrote the book the movie was based on, but I could not remember the name of the author. I said, "He's the guy that wrote that one series..." and then tried to recall the name of the series, thinking this would help me remember the author's name. "Oh, the Discworld series! Terry Pratchett."
Now, what is interesting about all this is that Terry Pratchett did indeed write the Discworld series (in fact there are some cheesy movies based upon a few of the books). What is really fascinating thinking back on this dream though, is that in this "dream world" I was able to recall information that I couldn't "remember" by thinking of things associated with the author, much like in my waking consciousness.
Obviously, the way things operate in the dream world is not the same as they do in "real life." However, even when the mind is essentially projecting the entire environment, some things like memory recall (and the inability to remember things!) may still be present.