msycamore said:

Compared to certain other films, Alien is/have been treated with respect: http://img29.imageshack.us/img29/2752/dsc03252v.jpg

Described on the jacket:

"The six-track magnetic sound masters used in the original 70mm theatrical prints were utilized to create the sound tracks for this widescreen laser disc release of Alien. Supervised by Lucasfilm's THX Laser Disc program, and encoded with Dolby Surround AC-3 Digital Sound, Ridley Scott's legendary science fiction masterpiece is now presented as close to the original theatrical experience as possible."

But still, the video has been touched for some reason, even though Ridley Scott is usually a good preservationist.