The Science Fiction Movies That Have That Real Sense Of Classic Science Fiction

Sure, Star Wars and Star Trek movies are two of the greatest science fiction classics ever created, but they are based in futuristic realism and not 1950's mystical senses. The first appearance of "Star Trek" as T.V. episodes was great science fiction but the movies that came out in later years were set as futuristic realism out of the true classic science fiction sense. I enjoyed watching "Independence Day" but was excited for "Mars Attacks" which came out shortly after "Independence Day". I was baffled at why "Mars Attacks" wasn't released before "Independence Day" because I knew "Independence Day" was going to be a mega hit. I thought "Mars Attacks" was going to be a mega hit also but it puttered out after the release of "Independence Day". I guess maybe the "Mars Attacks" makers thought it would do just fine after "Independence Day" got everyone whooped up into a science fiction fever but that wasn't the case... ..