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)
Dune (1984)
Ending / spoiler
Directed by: David Lynch
Starring: Max von Sydow, Patrick Stewart, Brad Dourif, Kyle MacLachlan, Jose Ferrer, Francesca Annis, Sting, Leonardo Cimino
Alia kills the Baron Harkonnen with a poisoned Gom Jabbar. The Fremen capture Arrakin City including the Emperor and his cohorts. Paul is challenged by Feyd Rautha (Sting) to a knife fight. Paul kills Feyd. Paul becomes an Emperor.
Lester
More mistakes in Dune
Piter De Vries: As you instructed me, I have enlightened your nephews concerning my plan.
Baron Harkonnen: My plan.
Piter De Vries: ...the plan... to crush the Atreides.
Trivia: David Lynch was disgusted with the elongated cut of the film which includes paintings of the 'robot revolt' back story to the original film, a sub-plot he deliberately omitted. He demanded his name be removed from the credits of the film and replaced with the Director's Guild nom de plume, 'Alan Smithee'. This was done so sloppily, by superimposing Smithee's name over Lynch's, that the credit reads "A ALAN SMITHEE FILM".
Answer: Because it was edited in a way he didn't approve of. The film was actually over 3 hours long, and it was trimmed by about an hour for the cinema version, and then a certain amount of pick and mix went on to come up with the video version.
David Mercier