The movie Blade Runner has more of a cult following. Edward James Olmos earliest roles in where the speaks in a mixture of 10 different languages. Harrison Ford's sleeper film which I believe came out after Raiders of the Lost Ark & Jedi.
My only recommendation would be to watch the original cut of the film. I honestly think the O.G. version is at it's best with narration and gives you a better inside look as to what is going on (from a different angle.)
Blade Runner is based off a book, "Do Androids Dream of Electric Sheep?" By: Philip K. Dick.