I felt that Dune didn't leave enough time to actually think about what was going on. Concepts from the book like the Missionaria Protectiva and Butlerian Jihad were given minimal lip service or not mentioned at all. But these are the best bits of Dune for me. These are what make it science-fiction rather than space opera. As a space opera Dune is good. As science-fiction it's great.
I haven't seen Foundation (and won't), but it sounds like a similar story.
I haven't seen Foundation (and won't), but it sounds like a similar story.