[Fluff time] Movieland of yesterday, what did they get right, what did they miss, and what did they never see coming?

Watching old movies and TV I always find interesting, what view they had about science and where they thought it would be at a given year. For instance, I seen one that believed by 1997 humans would be out in space exploring other planets. 2001 a Space Odyssey believed we would have a space station and a sentient computer by 2001, Star Trek might have gotten more right but it was set further in the future. What have you observed of any old sci-fi that was fairly accurate to the year or decade that a certain science development happened was available, etc., or what Movieland thought would be around at a given time but missed badly?