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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24. 'Life on Mars' (2006-2007)

One of the damnedest cop show that's ever been, this British series concerns a comatose Manchester cop who's slipped through time — or is perhaps just hallucinating — and finds himself solving crimes in 1973. Like the best speculative fiction, Life on Mars features a hero who questions what's happening to him and why, all while exploring a strange alien world. It's just that this exotic locale isn't the Red Planet so much as a smoky gray city from the recent past, where violent bigots decide what's right and wrong. (Warning: Avoid the U.S. remake, which misses the flavor and context of the original, and changes the ending to something mind-bogglingly stupid.) NM

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