Every word in the book has been used to describe this show. Revolutionary, bold and visionary are just a few. Even though it failed to catch on during its original run, it now permeates every facet of our modern lives, whether we choose to acknowledge it or not. It portrayed a future in which mankind not only got over its own internal struggles, it began to reach out to other worlds to expand its understanding of the universe.
From a more down-to-Earth standpoint, it inspired the tech-heads of this generation to build many of the electronic gadgets we take for granted today. The character names are burned into the collective consciousness of modern society. Catchphrases from the show are bandied about without any need for explanation.
The show is simply great.