While we're on the subject of Star Trek,
6.
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No storyarcs, each episode is a timeless classic with an unforgettable cast of characters. Star Trek is one of those shows where you can jump in at any time (with perhaps the exception of the pilot and the two-part episode) and not be lost or have to worry about catching up as each episode was its own story that resolved itself at the end. It's the series that started it all and has more classic episodes than I can even count apart from having the shortest TV run of all of them. And the Kurt, Spock, Bones relationship is one of the best trios I've seen on television. Not to mention Scotty is a hoot! How tough are Scotsmen?

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I rest my case.