Those very good points, but aside from that many of the technologies created for science fiction yesterday become the scinece fact of tomorrow. This has been proven time and time again. Leonardo DaVinci, Jules Verne and countless others were years ahead of any 'modern' science of their time, yet all of their creations have been realized.

Anything that makes a noise in a vacuum.

That scene in Superman II where the villans escape that two-dimensional prison and are talking in space (on the moon, I believe) bothers me to no end.

Bad Astronomer said:

Of all the places where Bad Astronomy originates, it's safe to say that Hollywood has the biggest budget. Most of the top-grossing movies of all time are science fiction... with emphasis on the word fiction. Don't get me wrong: I love science-fiction. When I was a kid I lived on a straight diet of ``Lost in Space'', Star Trek and ``Space: 1999''. I still do! Even though the science in these shows is usually pretty bad, they do serve the great purpose of getting people excited about science, space and astronomy.

http://www.badastronomy.com/bad/movies/

Worth some reading. He makes some good points.
There is also the forums
http://www.bautforum.com/

I find reading Arthur C. Clarke rewarding because its based on real science and you get to learn a lot of astronomy and science while being entertained.
Most of the time science and sci- fi are completely different.Reading Einstein or David Bohm or Deepak Chopra can be more rewarding than some made up sci-fi.
I met a guy once who said he lost all interest in Star trek when he realised all the diversity was in the real world as well eg. different shapes,sizes and types of people and different environments.Fact is indeed stranger than fiction.

I find reading Arthur C. Clarke rewarding because its based on real science and you get to learn a lot of astronomy and science while being entertained.

tidbit2, I took a class in college called Astronomy in Science Fiction. We would read science fiction stories and discuss the astronomy and science that was in them. It was a fun way to learn.