who plays deckard?
Harrison Ford.
Blade Runner
Casting the film proved troublesome, particularly for the lead role of Deckard. Screenwriter Hampton Fancher envisioned Robert Mitchum as Deckard and wrote the character's dialogue with Mitchum in mind. Director Ridley Scott and the film's producers spent months meeting and discussing the role with Dustin Hoffman, who eventually departed over differences in vision. Harrison Ford was ultimately chosen for several reasons, including his performance in the "Star Wars" films, Ford's interest in the "Blade Runner" story, and discussions with Steven Spielberg who was finishing "Raiders of the Lost Ark" at the time and strongly praised Ford's work in the film. 
who played rachel in the original blade runner movie Sean Young. when was this movie released? June 25, 1982. what was it about? The film is set in a dystopian future Los Angeles of 2019, in which synthetic humans known as replicants are bio-engineered by the powerful Tyrell Corporation to work at space colonies. When a fugitive group of advanced replicants led by Roy Batty escapes back to Earth, burnt-out cop Rick Deckard reluctantly agrees to hunt them down.
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Blade Runner [SEP] Casting
Hauer's portrayal of Batty was regarded by Philip K. Dick as "the perfect Batty – cold, Aryan, flawless". Of the many films Hauer made, "Blade Runner" was his favorite. As he explained in a live chat in 2001, ""Blade Runner" needs no explanation. It just . All of the best. There is nothing like it. To be part of a real which changed the world's thinking. It's awesome." Hauer rewrote his character's "tears in rain" speech himself and presented the words to Scott on set prior to filming. "Blade Runner" used a number of then-lesser-known actors: Sean Young portrays Rachael, an experimental replicant implanted with the memories of Tyrell's niece, causing her to believe she is human; Nina Axelrod auditioned for the role.