Maybe this Wikipedia site is of help. To sum up the most important things:
1982 Original workprint (failed in audience tests, not released):
no voice over
no happy ending
no unicorn dream
1982 US theatrical release:
happy ending (Deckard and Rachel drive through the countryside)
no unicorn dream
1982 International release:
more violence in ...
Interestingly enough, both films were written by their directors. As for eXistenZ, according to Wikipedia:
The film's plot came about after Cronenberg conducted an interview with Salman Rushdie for Shift magazine in 1995. At the time, Rushdie was in hiding due to a Fatwah being put on his life by Muslim extremists due to his controversial book The Satanic ...
The Wikipedia page referred to gives an exhaustive list of the differences, in terms of deleted scenes. There are indeed many scenes in the Final Cut which were omitted from earlier releases. But this is not really to the point.
The answer to the question is what differences those changes have made to the plot.
The Final Cut (2007) is a very different ...
From the Wikipedia page for The Tunnel:
The Tunnel (French: Tunnel) is a British-French crime drama television series adapted from the 2011 Danish-Swedish crime series The Bridge (Broen, Bron).
From the German Wikipedia page for The Pass:
Inspiriert wurden die Drehbuchautoren von der dänisch-schwedischen Serie Die Brücke – Transit in den Tod
The Ring (2002) is a remake of the Japanese horror film, Ringu (1998). You can read summaries of both plots in Wikipedia by following links Ringu (1998) and The Ring (2002).
In general, both films are based on Koji Suzuki's novel Ring and focus on a mysterious cursed videotape that contains a seemingly random series of disturbing images. So in most places ...
Other than the well known ones, ie. removal of voice over, removal of 'happy ending', inclusion of unicorn from Legend, mapping of Joanna Cassidy's face onto Zhora etc etc, there are a TON of changes that have been made from edit to edit.
I think you'll find all your answers here.
I read that the original movie had a voice over added to it to make things more accessible and the happy ending was tagged on because the studio requested it
The film was meant to have subtle implications on whether Deckard was a repicant and of how deeply replicants were in society - how many of the 'people' in the film are actually replicants.
I have ...