本物かどうか知らんけど、ネットに落ちてるシナリオと比べると、アドリブだったのは一部のようだが

http://www.dailyscript.com/scripts/blade-runner_shooting.html

シナリオ
I've seen things...
(long pause)
seen things you little people
wouldn't believe...
Attack ships on fire
off the shoulder of Orion bright as magnesium...
I rode on the back decks of a blinker and
watched c-beams
glitter in the dark
near the Tanhauser Gate.
(pause)
all those moments... they'll be gone.

映画
Quite an experience to live in fear, isn't it?
That's what it is to be a slave.

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 Tannhauser Gate.
All those moments will be lost...
...in time...
...like tears...
...in the rain.

Time to die.

SF的な語句は多少省略したりしながら踏襲して、ヒューマンな部分が追加されている感じかな。