Your review is much more detailed and complete than mine. Good job! I did not know of this movie myself, until a couple of years ago when I got a recommendation from some movie message board (probably the late, lamented IMDb message boards). I thought Glenne Headley did a good job with her British accent and did not notice the dubbing, but then I was also too wrapped up in the story to notice.

I agree that there are unanswered questions, but they don't detract from enjoying the movie. One is the toilet question -- sorry, but it really bothered me when I saw those giant bottles of Coke she drew for him. What did he do after finishing those bottles? The other more serious question is why she never tried to contact the real Marc directly, by sending a note with the doctor? Did the real Marc even know she was communicating with him in the Paperhouse?

PS -- did you know that Movie Chat imported the IMDb message boards? If there are gems you wrote years ago on those boards and didn't save, you can retrieve them! Unfortunately, not many people know about Movie Chat, so it's not nearly as lively as the old IMDb boards were.