This was one of the first sci-fi movies I ever saw and one by which I gage all others. Before there was 'Star Wars' there was 'The Day The Earth Stood Still'. It brought together all that later sci-fi movies strive for. A solid story, believable characters and, for the day, great special FX. It was an examination of society at the time and the racial prejudice that permeated all levels of life. It studies mans fear of the unknown and the violent reaction it produces even today, and how the love of one person can change the course of events for the better. It's a movie that can still stand on its own even by today's standards and should never be remade.
But that's just my opinion.
But that's just my opinion.