All replicants are referred to by first name, all
humans by last name.
Pris' incept date is Valentine's Day.
Each replicant's serial number summarizes their characteristics:
for example, Leon's "N6MAC41717" stands for Nexus-6, Male, A-Physical,
C-Mental, and incept date 4/17/17.
Replicant's eyes can be seen to glow occasionally.
Leon's eyes glow faintly for a moment during the VK test but this is very
hard to discern.
The major characters have either green or blue eyes.
During the scene where Deckard VK's Rachael, there
is a dissolve to indicate the passage of time. During the dissolve,
Deckard can be heard mentioning "orange body, green legs", the same description
of the spider that Rachael later describes.
When Deckard is travelling through the tunnel, he
"incorrectly" remembers what Leon said just before shooting Holden.
Another play on the viewer's memory.
The newspaper which lines the drawers in Leon's apartment
is the same edition as the one that Deckard reads at the beginning of the
movie.
Rachael's picture comes to life momentarily, and
the soundtrack has the sound of children playing.
Rachael's hairstyle: as a replicant, it is
perfect, rigid, machine like, and cold. As a human, it's soft, curly,
and messed up.
Roy Batty's soliloquy was ad-libbed by Rutger Hauer.
