Despite its initially lukewarm reception, people eventually got pretty deep into Blade Runner. It spawned some knock-off book sequels and a couple of computer games, and let's not even get into how the Internet continues to debate the movie's deeper meanings. (Check it out here.) Among other fans, the creators of the hit TV show Battlestar Galactica have testified to the movie's lasting influence and impact.
Blade Runner has also been pretty influential in the cyberpunk subculture… which might not really be a subculture. No one would actually say, "Hey—I am a cyberpunk!" (Well, somebody would, somewhere). But it's definitely a style and an aesthetic. Whenever anyone in a sci-fi future dystopia is sporting a punk 'do, they're taking their cue from Pris and Roy Batty in Blade Runner.