You already know how great this movie is, and I won't bore you by reiterating the plot. The thing that really irks me about this dvd are some of the extended scenes. They were cut out for a reason. I think the scene where the colonists discover the alien ship ruins alot of the suspense. It's too much information. It's so much scarier when you don't know EXACTLY what happened.
Another scene that bugs me is on the drop ship where Hudson goes on this "we got guns, we got knives" tirade. Please. I didn't want to lose all respect for this character, but, thanks to this scene, I have.
Aside from these 'mishaps' the rest of the extra footage is great. The scene where Ripley discovers her daughter is dead is absolutely essential, and I don't understand why it was cut out in the first place.
The scene with the 'sentry units' lends the movie an incredible amount of suspense, and after you see it you won't be able to go without it.
This dvd could have been perfect if you could somehow choose which scenes you would like to be included. Unfortunately, you'll have to sit through some redundant, and, at times, embarassing scenes.