list of the overall episodes that are available right now.
Here's the one concerning the Dune episode. Dune is one of those films that sort of polarizing within the SF community. Personally I enjoy it. Is it perfect, no, but what film is, particularly when taken from a pretty complex SF book like Dune. I enjoy the film adaption over the made-for-TV series.
I've seen the documentary called Jodorowsky's Dune (2013) as well. My take on that is not as positive as others have enjoyed it. I thought it was okay, but as that documentary went on, I kept thinking, well, all that is well and good in hindsight, but who knows if anything Jodorowsky says could have actually transpired? It's food for thought, but rather lofty. Saying he wanted to get Orson Welles and Salvador Dali to help with the film, and actually getting their help is two different things entirely. It just seemed more a cerebral pipe dream to me. I don't know of any director really that could outdo what David Lynch has already done. If I were to pick one, it might be Peter Jackson. He has the talent to pull it off and I would like to see what he could do with it, but there again the story has already been told by Lynch.