I find myself coming back to Dune at least once a year, and sometimes more than that. I got a copy as a present a long time ago, and I've appreciated it more and more as time goes on. Frank Herbert put years of research, of his life really, into Dune, and his notes as he expanded his universe are enough for his son and Kevin Anderson to continue his legacy. (Admittedly with not nearly the quality of the original FH books.) However, the current video adaptations kinda suck. One day, someone will do a good film or TV adaptation and it will be awesome. The Spice Must Flow
It's been a year or two since I last read through the series. I'll have to visit it again. Two of my favorite Sci-Fi games were basically spawned by Dune. Warhammer borrowed heavily from Dune and StarCraft did the same with Warhammer. I've no doubt that many other series were influenced by Frank Herbert's work as well. Every time I've gone through the books, I feel like I'm able to pick up on something new and interesting. I have no doubt that this time will teach me something new again.