> Alien 3
> Watch the Director's cut if you can.
Have you watched the "Quadralogy"'s prologues?
Aliens did have a proper Director's Cut. James Cameron wanted to do a longer movie, studio said no (Cameron only had Terminator so he didn't have total control yet) so he cutted like 30 minutes of the movie. The Director's Cut is the proper version and is the only one that should be watched.
The original Alien movie also had an "Extended Cut". Director Ridley Scott explained that in that edition, they added the deleted scenes and for commercial purposes that version was called "Director's Cut". HOWEVER, he was very satisfied with the original Theater released version and he still thinks that all those deleted scenes were deleted for a reason (Pace. The scenes are good but they mess with the pace).
Finally, Alien 3 was a mess and the studio is to blame. I'll quote wikipedia:
> Besides the need to shoot and rewrite the script simultaneously while fitting in sets that had already been built, filming was also plagued by incessant creative interference from studio executives, who overruled many of Fincher's decisions and dictated a large part of production...
> Upon completion, the studio dismantled and reworked the film without Fincher's consent... Fincher has since disowned the film, citing the aforementioned reasons. A heavily-revised version of the film, known as the Assembly Cut, was released in 2003, which Fincher refused to be involved with.
So yeah, there's no proper Director's Cut. What happened is that so many scenes were filmed in an alternate way that they made a new movie out of it. I preferred the original edit, but the new one was actually not bad.