While I can't "officially" tell you why I'm asking, I'm sure you can guess.
Here's some of what I've come up with so far:
I think in 1991 or so, Fox had produced some sort of animated series pilot called "Operation Aliens" - I know a lot of people have been dying to get a look at that:
http://www.alienscollection.com/operationaliens.html
Here's a list of some of the videos I can think of:
-Giger's Alien (1981)Making of Alien video RARE! Includes Space Jockey construction, warrior head mechanical effects, shots of Giger constructing the original alien with bones and clay, interview with Ridley Scott and more. Subtitles
James Cameron: A Director & His Work (making of Aliens, UK) Making of featurette. Included on Alien rental release in the UK (?)
Alien 3: Bringing the Screams to the Screen Alien Saga retrospective (recorded from HBO)
The Making of Alien 3 Behind the scenes feature, available in Triple Pack
The Making of Alien (UK) Behind the scenes feature
Alien 3 Advance featurette
Alien 3 Now at the Movies featurette
Alien 3 Pepsi ad (long and short versions)
Alien 3 Awards nomination (Woodruff/Gillis)
Alien War (UK)Segments recorded from This Morning & Express News (UK). Also Scottish TV featureAlien War (UK)Promo (London)Alien War (UK)Unreleased Making of feature
The Making of Alien Resurrection hosted by Ron Perlman Video recorded from HBO
The Making of Alien Resurrection hosted by Brad DourifVideo recorded from The Sci-Fi Channel
Behind the Scenes: Alien ResurrectionVideo recorded from E! Entertainment Television
The Making of Alien ResurrectionVideo recorded from TNT Rough Cut
The Making of Alien ResurrectionVideo recorded from Movie Magic (several segments)The Making of Alien ResurrectionSegments recorded from Access Hollywood, Entertainment Tonight, Good Day LA and Fox News
Alien Resurrection Featurette (included on Widescreen Series videos)
Movie Magic Several segments on the Alien saga including Skotaks segment
Alien/Aliens/Alien 3 audio visual press kits