The 1984 Dune was pretty lame, I have to admit, but I still found it interesting to watch.
There is a brand new Dune movie out this year, though, which some are saying is really a good adaptation of the book Dune. I think it covers the first half of the book, and another movie is planned/hoped for. I don't think it is released yet in the US, but it has been released elsewhere already.
I've become a fan of Quinn's Ideas, a youtuber with a lot of enthusiasm for science fiction. He has rekindled my interest in Dune, prompting me to reread some of the novels.