Who was real?

Rating: 9/10 (13 December 2006)

What all the comments seem to miss is the plot.
Who was the *real* person in this movie? Was it the hero, Harold (Will Ferrel)? Was it the troubled writer, Eifel (Emma Thompson)? Were all the rest fictional? Was there more than one real person? What about the professor (Dustin Hoffman)? Was he real or fictional? Did the writer not know the role planned for the watch and bicycle? Strange writer's block? All the reviews and comments I've seen have been wrong about the plot. They assume the obvious without thinking.
What's *your* plot? I have mine. (all plot discussion surely are spoilers)