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

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35. 'Now and Again' (1999-2000)

Born just a few years before viewers went crazy for Lost's cliffhangers and conspiracies, this ambitious CBS series imagines what would happen if the brain of an affable suburban family man were stuck into the body of a government-engineered super-soldier. Moonlighting creator Glenn Gordon Caron pitched the show as an action-adventure version of the Broadway musical Damn Yankees, and considered it to be primarily a show about the dashed dreams of the middle-aged. But the Saturn Awards were rightly impressed by the wild plots and superheroics, and ranked it among the best science-fiction TV of its era. NM

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