I saw it when I was about 15 in the theater, and it made no sense to me at the time. I wanted more shooting and was disappointed that the Blade Runner only shot and killed two people, Zhora and Pris. Later in life, I grew to appreciate it. Everything from Vangelis's sound track, to the filming in the iconic Bradbury Building.
A favorite part is the interview at the beginning of the movie of Leon to see if he is a replicant. "Let me tell you about my mother.....BANG."
Another favorite is the last dialog of Roy Batty, " I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the TannhÃ¤user Gate. All those moments will be lost in time, like tears in rain. Time to die."
I prefer the Director's Cut, without that annoying voice over narration by that jerk Harrison Ford.