Dune is another series that I got so indepth that I started using the language in the book. Started calling my work uniform my stilsuit, my pencil my crysnife, and up until I re-read the Dark Tower, when I refered to god I would say Shaitten, now I say Gan.
Frank Herbert wrote I think 7 of them, then his son took over. His son meshed his own ideas into the series and pretty much has created a conundrum of unexplained events and more questions about the series than there ever was. It's kind of like the newer Star Wars movies (eps.1-3) with a lot of unanswered questions or things that just don't add up to eps. 4-6.