Ive seen the modified version of Dune. It's bad, but then so is the Lynch vision of the movie.
Either way, the movie opens with a long explanation of the universe by Princess Irulian, telling the viewer rather than showing organically throughout the movie. I remember thinking Id have no idea wtf was going on had I not read the book.
Believe Ive seen the Smithee tv versions of a couple as well...probably Showgirls and Scent of a Woman.