Favorite Theatrical version: Alien
Favorite Director's Cut/Extended version: Alien (WHY did they ever cut the cocoon scene?!?)
Personal overall favorite: ALIEN 3 Assembly Cut
The dark, hopeless, defenseless atmosphere of Alien3 AC is simply great. The extended scenes and ox alien make so much more sense and completely change the movie from a sure D- to A or A+. Sure, Aliens had firepower and action (which is always good), but I prefer a more stark and frightening atmosphere for the series. Considering Fincher had SO many problems, it is a complete success he even stayed on to finish it. As for Alien Rez, well, read my signature line.