40 Best Science Fiction TV Shows of All Time

From superhero shows and space operas to creepy anthology series, the greatest small-screen sci-fi of all time

1. 'Star Trek' (1966-1969)

Nearly every word of its opening monologue entered the popular parlance. Nearly every nuance of its actor’s performances became (in)famous. Nearly every science-fiction series to come afterwards owes it a huge debt, up to and including the oh-so-similarly titled Star Wars. Yes, Gene Roddenberry's groundbreaking show is the sun around which the entire SF genre orbits. Its yin-and-yang leads, hotheaded Captain James T. Kirk and coolly logical science officer Mr. Spock, rightfully made actors William Shatner and Leonard Nimoy icons. Its aliens and enemies — Tribbles and Klingons and Khan, oh my! — remain indelibly entertaining. And its muscular, humane cold-war liberalism still holds up, as does its New Frontier zeal for exploration and optimism. May the Starship Enterprise never stop boldly going into the hearts and minds of the sci-fi faithful. STC

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