I know lot’s of really dumb geeks that are into sci-fi because they can’t function in society.  I also know several highly intelligent people who simply don’t want to function in society and happen to like sci-fi.  It can be difficult for outsiders to separate these groups, especially because the less intelligent geeks try and mask their faults.  It's something like the Bulb problem where it's hard to tell if someone is actually highly intelligent or just acts differently than you do.<p>There is still a shared context among the geek community.  I think Equilibrium was the most emotionally moving movie I have ever seen yet I have little interest in seeing it again, others just like the gun play and will watch it constantly.  But, such distinctions are only relevant once you have seen the movie.  Stepping back a few years and Blade Runner has the same dichotomy of people who like and or obsess over the movie and those who simply reacted strongly to it.  (Now add Dune, Enders Game, Stranger in a Strange Land, etc.)<p>PS: The number of times you have seen each of the Star Wars films is probably a good metric for this.  (Not to insult Star Wars.)