Alien (original), Aliens (special edition), and Alien 3 (original).
I really enjoyed this marathon, but I didn't have time for Alien Resurrection so I didn't get that far (maybe tomorrow). In particular with Alien 3 I recall seeing the special edition way more times than the original (once or twice) so that's why I decided to check the original out for Alien 3, and it felt like the movie went by faster and it felt like stuff was skipped because I'm used to the special edition.
Overall, great time.