Re: Films - meh
I did it the other way round (book then film) and thought the film was a travesty of the book, especially some of the effects. The sandworms and ornithopters were especially crap. But Herbert was an very inconsistent writer. I tried to read the second Dune novel but slung it on discovering that the Face Dancers were such a powerful group that they could not have existed without being a visible part of society in Dune. I read quite a few of his other books and disliked a lot, quite apart from Dune II onwards. Eyes of Heisenberg, Santaroga Barrier and Hellstrom's Hive were also crap, but Dragon In The Sea and Destination: Void wer very good.
"Dragon In The Sea" is the only one of his books I've kept. Its also the one I really wish somebody would film. It would make a superb low budget, claustrophobic whodunnit along similar lines to some of Hitchcock's best.