Continuity mistake: Just before Roy kills Tyrell, he says "Nothing the god of Bio-Mechanics wouldn't let you into heaven for." A drop of sweat begins to hang down off Roy's nose, about to fall. The camera changes angles and suddenly the drop has vanished. (01:25:35)
Continuity mistake: After he finds dead Pris, the blood smears on Roy Batty's lips change. He touches her bloody wound with the fingertips of his right hand and then presses them to his upper lip. You will see two parallel smears of blood. Moments later there is only one smear going from his upper lip all the way to his chin. (01:37:20)
Continuity mistake: When Roy throws Deckard to the ground after having rescued him, Deckard's shirt has ridden halfway up his torso, but when the shot cuts to behind Roy, the shirt is down. (01:45:45)
Continuity mistake: The scene where Roy saves Deckard's life and then dies takes place on a very dark and rainy night. After Roy says his final line, "time to die", the white dove in his hand gets loose and flies away. The next shot shows the bird flying in a totally clear cloudless sky, with lighting that suggests that it is becoming morning. The next shot is of Deckard, back in the heavy rain and total darkness. (01:47:20)
Continuity mistake: The original scene where Leon is being interrogated is different to the recording of the scene that Deckard watches as he is driving. Even what Leon says is different, in the original scene I think he says "Let me tell you about my mother" but in the recorded playback he says "I'll tell you about my mother", and the line is delivered differently.
Continuity mistake: At Sebastian's place, when Roy kisses Pris on the nose, the powder covering her face and her nose transfers from Pris to Roy, so now Pris's nose is void of powder, but a few seconds later, the powder returns.
Continuity mistake: After Rachael shoots Leon when she and Deckard are in his apartment Deckard suddenly changes from his trench coat into a jacket.
Continuity mistake: When Zhora collapses after being shot by Deckard, her legs are spread apart, but when Deckard approaches seconds later, her legs are suddenly together.
Continuity mistake: When Pris is fighting Deckard in the apartment, in some shots she is wearing pantyhose, but in other shots her legs are bare.
Continuity mistake: When Deckard shoots Zhora and she crashes through the window dead, her hands are above her head, but when Deckard walks up to her body her hands are now halfway up her body.
Chosen answer: The language is Chinese Cantonese, and is saying something like "... Now we can more time.", and when the replicants came inside the lab he says "... What a f*** doing here..."