


Space. The Final Frontier. The U.S.S. Enterprise embarks on a five year mission to explore the galaxy. The Enterprise is under the command of Captain James T. Kirk with First Officer Mr. Spock, from the planet Vulcan. With a determined crew, the Enterprise encounters Klingons, Romulans, time paradoxes, tribbles and genetic supermen led by Khan Noonian Singh. Their mission is to explore strange new worlds, to seek new life and new civilizations, and to boldly go where no man has gone before.

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The peak run. Top 40% of seasons by average rating — consecutive, with an average of 7.64.
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29 episodes • 1966Avg: 7.6Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | The Man Trap | Sep 8, 1966 | 7.2 |
| 2 | Charlie X | Sep 15, 1966 | 7.0 |
| 3 | Where No Man Has Gone Before | Sep 22, 1966 | 7.7 |
| 4 | The Naked Time | Sep 29, 1966 | 7.8 |
| 5 | The Enemy Within | Oct 6, 1966 | 7.6 |
| 6 | Mudd's Women | Oct 13, 1966 | 6.7 |
| 7 | What Are Little Girls Made Of? | Oct 20, 1966 | 7.5 |
| 8 | Miri | Oct 27, 1966 | 6.9 |
| 9 | Dagger of the Mind | Nov 3, 1966 | 7.4 |
| 10 | The Corbomite Maneuver | Nov 10, 1966 | 8.0 |
| 11 | The Menagerie (1) | Nov 17, 1966 | 8.2 |
| 12 | The Menagerie (2) | Nov 24, 1966 | 8.1 |
| 13 | The Conscience of the King | Dec 8, 1966 | 7.1 |
| 14 | Balance of Terror | Dec 15, 1966 | 8.8 |
| 15 | Shore Leave | Dec 29, 1966 | 7.3 |
| 16 | The Galileo Seven | Jan 5, 1967 | 7.6 |
| 17 | The Squire of Gothos | Jan 12, 1967 | 7.2 |
| 18 | Arena | Jan 19, 1967 | 7.9 |
| 19 | Tomorrow Is Yesterday | Jan 26, 1967 | 7.9 |
| 20 | Court Martial | Feb 2, 1967 | 7.4 |
| 21 | The Return of the Archons | Feb 9, 1967 | 7.1 |
| 22 | Space Seed | Feb 16, 1967 | 8.7 |
| 23 | A Taste of Armageddon | Feb 23, 1967 | 8.0 |
| 24 | This Side of Paradise | Mar 2, 1967 | 7.8 |
| 25 | The Devil in the Dark | Mar 9, 1967 | 8.3 |
| 26 | Errand of Mercy | Mar 23, 1967 | 8.1 |
| 27 | The Alternative Factor | Mar 30, 1967 | 5.7 |
| 28 | The City on the Edge of Forever | Apr 6, 1967 | 9.2 |
| 29 | Operation: Annihilate! | Apr 13, 1967 | 7.5 |

26 episodes • 1967Avg: 7.4
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Amok Time | Sep 15, 1967 | 8.6 |
| 2 | Who Mourns for Adonais? | Sep 22, 1967 | 7.1 |
| 3 | The Changeling | Sep 29, 1967 | 7.6 |
| 4 | Mirror, Mirror | Oct 6, 1967 | 9.0 |
| 5 | The Apple | Oct 13, 1967 | 6.4 |
| 6 | The Doomsday Machine | Oct 20, 1967 | 8.7 |
| 7 | Catspaw | Oct 27, 1967 | 6.2 |
| 8 | I, Mudd | Nov 3, 1967 | 7.3 |
| 9 | Metamorphosis | Nov 10, 1967 | 7.3 |
| 10 | Journey to Babel | Nov 17, 1967 | 8.5 |
| 11 | Friday's Child | Dec 1, 1967 | 6.7 |
| 12 | The Deadly Years | Dec 8, 1967 | 7.3 |
| 13 | Obsession | Dec 15, 1967 | 7.2 |
| 14 | Wolf in the Fold | Dec 22, 1967 | 7.2 |
| 15 | The Trouble With Tribbles | Dec 29, 1967 | 8.7 |
| 16 | The Gamesters of Triskelion | Jan 5, 1968 | 7.0 |
| 17 | A Piece of the Action | Jan 12, 1968 | 7.7 |
| 18 | The Immunity Syndrome | Jan 19, 1968 | 7.5 |
| 19 | A Private Little War | Feb 2, 1968 | 6.7 |
| 20 | Return to Tomorrow | Feb 9, 1968 | 7.4 |
| 21 | Patterns of Force | Feb 16, 1968 | 7.5 |
| 22 | By Any Other Name | Feb 23, 1968 | 7.5 |
| 23 | The Omega Glory | Mar 1, 1968 | 6.0 |
| 24 | The Ultimate Computer | Mar 8, 1968 | 8.0 |
| 25 | Bread and Circuses | Mar 15, 1968 | 7.0 |
| 26 | Assignment: Earth | Mar 29, 1968 | 7.6 |

24 episodes • 1968Avg: 6.9Valley of Despair
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Spock's Brain | Sep 20, 1968 | 5.7 |
| 2 | The Enterprise Incident | Sep 27, 1968 | 8.4 |
| 3 | The Paradise Syndrome | Oct 4, 1968 | 6.7 |
| 4 | And the Children Shall Lead | Oct 11, 1968 | 5.2 |
| 5 | Is There in Truth No Beauty? | Oct 18, 1968 | 6.9 |
| 6 | Spectre of the Gun | Oct 25, 1968 | 7.2 |
| 7 | Day of the Dove | Nov 1, 1968 | 7.7 |
| 8 | For the World Is Hollow and I Have Touched the Sky | Nov 8, 1968 | 7.1 |
| 9 | The Tholian Web | Nov 15, 1968 | 8.0 |
| 10 | Plato's Stepchildren | Nov 22, 1968 | 6.5 |
| 11 | Wink of an Eye | Nov 29, 1968 | 7.3 |
| 12 | The Empath | Dec 6, 1968 | 6.5 |
| 13 | Elaan of Troyius | Dec 20, 1968 | 7.0 |
| 14 | Whom Gods Destroy | Jan 3, 1969 | 6.9 |
| 15 | Let That Be Your Last Battlefield | Jan 10, 1969 | 7.2 |
| 16 | The Mark of Gideon | Jan 17, 1969 | 6.5 |
| 17 | That Which Survives | Jan 24, 1969 | 6.5 |
| 18 | The Lights of Zetar | Jan 31, 1969 | 6.2 |
| 19 | Requiem for Methuselah | Feb 14, 1969 | 7.3 |
| 20 | The Way to Eden | Feb 21, 1969 | 5.4 |
| 21 | The Cloud Minders | Feb 28, 1969 | 7.1 |
| 22 | The Savage Curtain | Mar 7, 1969 | 6.6 |
| 23 | All Our Yesterdays | Mar 14, 1969 | 8.1 |
| 24 | Turnabout Intruder | Jun 3, 1969 | 6.8 |