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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'Lost' (2004-2010)
Bob D'Amico/ABC via Getty Images14/40

14. 'Lost' (2004-2010)

Sure, the ending was considered to be a letdown by many viewers. But only the stingiest purist would let that spoil a show that for six years packed in more lovable characters and spine-tingling moments than any serialized science-fiction series ever has. From teleporting polar bears to time-hopping super-islands, Lost's core creative team of Damon Lindelof and Carlton Cuse kept coming up with ideas that sent fans scrambling to the Internet to theorize. All the while, the writers divvied a rich mythology into memorable individual episodes, telling stories filled with wit, awe, and heartbreak. NM

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