Popping in to throw in my 2 cents: How about Danny Trejo as Stilgar? Any reason that wouldn’t work?
Duke Leto Atreides – Johnny Depp
Lady Jessica – Johnny Depp
Paul Atreides – Johnny Depp
Alia Atreides – Johnny Depp
Baron Vladimir Harkonnen – Johnny Depp
Feyd-Rautha Harkonnen – Johnny Depp
Gaius Helen Mohiam – Johnny Depp
It might just work!
kelly5078 said:
I don’t recall those being a problem. If you want a miscast, try the miniseries version with John Hurt as Duke Leto. John Hurt! This guy is so drab that the scene were Duke Leto is supposed to be furious that the Harkonnen’s tried to kill Paul is completely unbelievable. He does not convey anger at all.
(As an aside, I was completely shocked by his role in Hulk 2, not only because he was hard to recognize, but because that role actually had dynamic range I hadn’t seen from John Hurt before.)
SmashTheState said:
That was the biggest problem with the Lynch version, the failure to mimic the book enough. That, and trying to cram a 700+ (???) page novel into a 2 hour movie.
Argent Towers said:
Not just the last 4 years.
Lynn Bodoni said:
This! I watched it the first time not having a clue what was going on. I pieced it together to some extent, but never really felt connected to it.
On the other hand, you can never go wrong with an all-muppet cast:
Paul - Kermit
Chani - Miss Piggy
Baron Harkonnen - Fozzie Bear
Thufir Hawat - Bert
Piter DeVries - Ernie
Rev Mother - The Great Gonzo (in drag, of course)
etc
Isn’t a mentat a human computer? So, obviously, Thufir would be the Count!
Have the female characters played by Eddie Murphy, Tyler Perry, and Eddie Izzard.
On second thought, Eddie Izzard is the Baron Harkonnen. He reclaims Arrakis for himself by bringing a flag.
Let’s just have an all-Latin cast: Salma Hayek as Jessica, EJ Olmos as Leto, Trejo as Stilgar, Maria Conchita Alonso as Gaius Helen Mohiam, Horatio Sanz as Baron Harkonnen. Why not?
Alicia Witt can act and actually resembles the character as described in the book. It’s not that the hair color needs to be identical, it’s that the actor should somewhat resemble the character as described by the author of the book.
Wow, totally irrelevant to my point, which is that Nicholson in a fat suit would be ridiculous. I couldn’t give less of a damn about his politics.
Sure there are. Dwayne Johnson is totally wrong for Feyd Rautha. He and Paul have a very close fight at the end of the novel, and are pretty evenly matched, physically. Both have a muscular build, and it’s not that hard to find. I don’t think prana bindu training would produce a Dwayne Johnson.
So you’re suggesting that the child of Jack Nicholson and Whoopi Goldberg would be Salma Hayek? Can I have some of whatever you’re smoking? 
Ok, take this:
Lady Jessica …Angelina Jolie
Piter De Vries…Steve Buscemi
Padishah Emperor Shaddam IV…Jon Voight
Shadout Mapes …some weird old lady
Thufir Hawat …Kevin Dunn
Duncan Idaho …Clive Owen
Paul Atreides …Zack Efron
Princess Irulan …Scarlet Johannson
Reverend Mother Ramallo…Helen Mirren
Stilgar…Bruce Willis
Baron Vladimir Harkonnen …Philip Seymore Hoffman
Reverend Mother Gaius Helen Mohiam…Demi Moore
Duke Leto Atreides…Gerard Butler
The Beast Rabban…Jack Black
Gurney Halleck…John Turturro
Feyd Rautha …Robert Pattinson
Doctor Wellington Yueh …Ewan McGregor
Alia …some little girl
Chani…Meghan Fox
Directed by Michael Bay
I like it, except Helen Mirren should be Gaius Helen Mohiam, because Demi Moore is not old enough to be Angelina Jolie’s mother. And Alia should be played by some Fanning child. Other than that, excellent casting, Mr. Bay.
Duke Leto Atreides – Walter Matthau
Lady Jessica – Roseanne Barr
Paul Atreides – Pauly Shore
Alia Atreides – Juliette Lewis (she was BORN to play this role)
Baron Vladimir Harkonnen – Mike Myers
Feyd-Rautha Harkonnen – David Spade
Gaius Helen Mohiam – Nancy Cartwright
Duke Leto Atreides – Elias Koteas
Lady Jessica – Deborah Kara Unger
Paul Atreides – James Spader
Alia Atreides – Holly Hunter
Baron Vladimir Harkonnen – John David Carson
Feyd-Rautha Harkonnen – Peter MacNeill
Gaius Helen Mohiam – Rosanna Arquette
Duke Leto Atreides – Sean Connery
Lady Jessica – Charlize Theron
Paul Atreides – Keanu Reeves
Alia Atreides – Miley Cyrus
Baron Vladimir Harkonnen – Charles Durning
Feyd-Rautha Harkonnen – Bruce Dern
Gaius Helen Mohiam – Gates McFadden
Your choice of Alicia Witt for Jessia would be funny, as she was already in the original Dune movie as Alia (sp?)