Bit surprised, didn't realise this one was done by James Cameron. Ridley Scott is nowhere to be seen (from a very quick look into IMDB) but he obviously studied "Alien" thoroughly.
Again, long slow interior shots. Loved them. Again, hardly any music, which I don't think was that common then. The blueish glow that illuminates everything, a good follow-up.
Continuation of the story made sense, watched the director's cut again, impressive with a length of 2h30, but it's absolutely not too long.
This is the "famous one" for me. All that I remember is the shot of Ripley throwing herself in an inferno as if she's diving. Dunno if that's #3 or #4. Will find out soon.