20 Best Episodes in the Star Trek TV Franchise, Ranked

Few franchises have enjoyed the popularity and longevity that the beloved sci-fi Star Trek has. It's the longest-running franchise in American TV history, with no signs of wrapping up anytime soon, and has been hugely influential in pop culture. The original series was created by Gene Roddenberry and followed the crew of the U.S.S. Enterprise as they explored the galaxy in the 23rd century, with subsequent series following a similar premise but with different ships and crews and set in different times, as well as a number of films.