These are my list of the top ten episodes:
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- Space SeedThe Enterprise comes across the ancient sleeper ship S.S. Botany Bay left over from Earth's Eugenics Wars. Discovering a number of humans in stasis pods aboard the ship, Kirk orders for them to revived. However when their leader, Khan, attempts to seize control of the Enterprise, Kirk is left powerless.
- The Corbomite Maneuver The Enterprise becomes trapped by a huge crystalline-type vessel whose menacing commander swiftly informs Kirk that he has trespassed into the territory of the First Federation and must face destruction.
- Balance of TerrorThe Enterprise is forced into a deadly game of "cat and mouse" when a Romulan bird of prey is spotted close to Federation territory. Kirk must outwit the highly intelligent Romulan Commander if he is to stand any chance of saving his crew.
- The Immunity SyndromeAfter losing contact with the U.S.S. Intrepid and the Gamma 7-A star system, the Enterprise encounters a giant amoeba that is preparing to reproduce.
- What Are Little Girls Made Of? Visiting planet Exo III, Nurse Chapel is reunited with her long lost fiancé, Dr. Roger Korby. However when Kirk is kidnapped and duplicated by one of Korby's home-made androids, the crew is placed in an impossible predicament of picking out the real captain.
- The Doomsday MachineInvestigating the destruction of several planetary systems, the Enterprise discovers a crippled starship floating in space. Commodore Decker is the only one left on the ship and is soon found to be less than sound-minded when he takes control of the Enterprise and exposes it to lethal danger.
- The Ultimate ComputerThe Enterprise is outfitted with the new experimental multitronic unit, the M-5, a computer that may threaten the future of human exploration of space, but the experiment soon takes a terrible turn for the worse.
- The Enterprise IncidentAn unusually restless Captain Kirk suddenly orders the Enterprise into Romulan territory where the ship is quickly surrounded by enemy forces.
- Mirror, MirrorKirk, Scott, McCoy and Uhura enter a parallel universe where the crew of the Enterprise act as sadistic savages. Unbeknownst to them, their evil counterparts have entered their "normal" universe and seem determined to wreak havoc.
- Wink of an EyeThe super-accelerated Scalosians, invisible to the naked eye, plan to use the Enterprise crew to sustain their civilization. When Ensign Compton and Captain Kirk drink the Scalosian water, they super-accelerate into the "Scalosian realm."
Honorable Mentions:
The ChangelingThe Enterprise is sent to investigate the destruction of a star system and its four billion inhabitants. When it arrives at the coordinates, the Enterprise is threatened by a probe calling itself Nomad. When Kirk identifies himself by name, Nomad mistakes him it's creator.
The CageWhen Captain Pike and the crew of the U.S.S. Enterprise are lured to the distant planet Talos IV, they are exposed to a race of powerful beings capable of creating powerfully realistic illusions. Pike must battle within his own mind in order to free himself and defeat his captors.
The Court MartialKirk is ordered to face a Court Martial on Starbase 11 when the circumstances surrounding a crewman's death are thrown into doubt. Kirk's lawyer Samuel T. Cogley must call on the assistance of the Enterprise crew in order to clear Kirk's name.
TURNABOUT INTRUDERDr. Janice Lester forcibly trades bodies with Captain Kirk to obtain what she always wanted: command of a starship, but when "Captain Kirk" begins to exhibit strange behaviour, the Enterprise crew turn to mutiny. In this final adventure, Mr. Spock, Dr. McCoy and Scotty are sentenced to death by what appears to be their captain.
THE WAY TO EDEN The Enterprise takes aboard insane Dr. Sevrin and his group of "hippie" followers on their quest to find the planet Eden, including one who is a long-lost-love of Ensign Chekov.