We wouldn't have Star Trek without The Original Series. Of its three seasons, which one is the best? Let's find out.

Primarily the chief science officer on the starship Enterprise, Spock is a fixture on the bridge and the best friend of Captain James T. Kirk. Despite his often emotionless demeanor as a Vulcan, Spock finds himself at odds with his mixed heritage as he represses his human sentiments.

The Original Series still needed to engage in a physical altercation, with some human characters clearly more adept at fighting than other

The Motion Picture wasn't a fan favorite film. Though the cast of Star Trek: The Original Series were reunited onscreen for the first time in ten years, the movie wasn't the best it could have been for some fans.