Apocalypse Now
Although Marlon Brando proved himself as one of the greatest actors ever, he was apparently a bit hard to work with on set. Thus, we have one of our more extreme examples of going off-script. Also, Brando famously used method acting and even adopted character quirks in his real life. While acting as Colonel Kurtz for Apocalypse Now, Brando simply refused to learn his character’s lines. Actually, he even jokingly put his script on his head as a paper hat. So by the end of the film, he had improvised close to 18 minutes of Colonel Kurtz’ dialogue.
Apocalypse Now
Blade Runner
Harrison Ford makes our list again for starring in this film, but actually the other star, Rutger Hauer is responsible for this moment. Anyway, this moment happened during the very final scene of Blade Runner. First, Rutger Hauer did not stray from the original script, but then he chose to deviate. Soon, his speech became the now famous ‘tears of rain’ speech, which was totally improvised. Amazing!
Blade Runner