The film I'm actually interested is "The Cabinet of Dr. Caligari" which was made in 1920-s, so the copyright had obviously expired... It had a remake of sorts in 60-s called "The Cabinet of Caligari" and a fan remake (a very impressive one I might add) in 2005.
Then you need to be very careful not to reference anything from either the sequel or the remake. Ask Jake ( GreyAlien ) about the copyright situation for Wizard of Oz for an explanation of how complicated that can be. One example which springs to mind is that the book had no mention of Ruby Slippers, it was an invention of the movie studios who wanted to find something to show off their new technicolor technology. The book featured silver slippers instead. That's the kind of fine detail you would have to check if you wanted to do that.
I think it's a pretty cool idea BTW. I suspect there is some really great material in there.