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18 Best & Worst Movie Aliens

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BEST 5. Spock — 'Star Trek' Franchise

Spock has lived long and prospered for nearly 50 years. Made famous by actor Leonard Nimoy, and now played by Zachary Quinto, Spock is one of the galaxy's most intelligent, trustworthy and logical beings.—Xfinity Entertainment Staff (Photo: Bertil Unger/Evening Standard/Getty)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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