Deliberate mistake: The Fremen wear "stillsuits" to conserve their water, yet leave their heads completely uncovered. This would result in quite a bit of water loss through perspiration. (In the book, they wore hoods, masks and nose filters, leaving only the eyes uncovered, but it wouldn't work in a movie to have all the actor's faces obscured!).
Dune (1984)
1 deliberate mistake
Directed by: David Lynch
Starring: Max von Sydow, Patrick Stewart, Brad Dourif, Kyle MacLachlan, Jose Ferrer, Francesca Annis, Sting, Leonardo Cimino
Revealing mistake: During the invasion of Dune by the Harkonnen, a Sardukar soldier throws a guard from what appears to be the palace's wall. When he hits the ground all the bodies around him bounce as if they where lying on some sort of cushion. (01:09:50)
Paul: The Worm is the Spice! The Spice is the Worm.
Trivia: The tendons on the worm when it gets hooked by Paul are made from condoms.
Question: Admittedly the sound on my copy of this movie is lacking somewhat but when Paul is researching Arrakis and Gurney et all enter I swear I can hear the trailer for the movie playing in the background. Am I correct on this?
Answer: The beginning narration is playing softly, as if it's coming from whatever computer Paul was doing research on. Like he was watching a movie about the world he is living in, which is sort of odd.
Answer: No. At least, not on the DVD I have. It does play the title tune in the background, though.
Zaphod Beeblebrox