In my opinion, Dune is a decent story, but one whose support industry is far better than the actual book. Cover art, music, and videogames are usually very good.
The movie was a little lacking, but there was an earlier attempt by Chilean mystic/comic book writer/ filmmaker Alejandro Jodorowsky to bring it to the silver screen. Featuring design by H.R. Giger, Moebius, and Chris Foss, it would have been a failure, but a visually epic one.