This is a survey out of the U.K., but we get the feeling like it applies pretty well over here too.  The bottom line:  When it comes to technology from movies, a LOT of people have problems separating the science from the fiction.  Check this out:

Almost 50% of adults believe the mind erasing device from "Men In Black" exists.

More than 40% believe hoverboards exist, like the one in "Back To the Future Part Two".  Almost 25% believe that teleportation is possible right now.

Almost 20% think you can SEE gravity.  And more than 20% believe that light sabers exist. 

Via (AOL News)