The second episode of the animated Star Trek series premieres on NBC, written by original series script editor D.C. Fontana, with Mark Lenard reprising the role of Sarek. 
The second episode of the animated Star Trek series premieres on NBC, written by original series script editor D.C. Fontana, with Mark Lenard reprising the role of Sarek.
The fourth episode of the animated Star Trek series premieres on NBC, with a script by original series writer Margaret Armen.
The seventh episode of the animated Star Trek series premieres on NBC, written by original series cast member Walter “Chekov” Koenig, who is not reprising his role for the animated series.
The tenth episode of the animated Star Trek series premieres on NBC, written by Harry Mudd’s creator, Stephen Kandel, and featuring Roger C. Carmel reprising the role of Mudd.
The 11th episode of the animated Star Trek series premieres on NBC, with a script by original series writer Stephen Kandel.
The 13th episode of the animated Star Trek series premieres on NBC, with a script by original series writer Margaret Armen.
The 14th episode of the animated Star Trek series premieres on NBC, with a script by sci-fi novelist Larry Niven adapting one of his own short stories into the Star Trek universe.
The 16th episode of the animated Star Trek series premieres on NBC. The episode is written by Stephen Kandel, the writer who created the popular Trek character Harry Mudd.
ABC premieres the made-for-TV movie The Questor Tapes, starring Robert Foxworth, Mike Farrell, John Vernon and Majel Barrett. Created and co-written by Star Trek creator Gene Roddenberry, The Questor Tapes is a promising series pilot, though no series based on it is ordered. (Years later, many observers will notice that Roddenberry transfers Questor’s personality and even some of his backstory to a new Star Trek character named Data.)
The first episode of Land Of The Lost premieres on NBC. The series is produced by Sid & Marty Krofft (H.R. Pufnstuf, Lidsville), and this episode is written by former Star Trek writer David Gerrold, who also had a hand in creating the series.
The 17th episode season of the animated Star Trek series airs on NBC. The second season premiere is written by 19-year-old Star Trek fan (and future Trek novelist) Howard Weinstein.
The second episode of Land Of The Lost premieres on NBC. This episode, written by David Gerrold, introduces the show’s primarily recurring villains, the reptilian Sleestaks.
The 18th episode of the animated Star Trek series on NBC. The episode is written by The Trouble With Tribbles writer David Gerrold.
The third episode of Land Of The Lost premieres on NBC. This episode introduces the Marshall family’s recurring dinosaur friend Dopey, and is written by Margaret Armen (Star Trek: The Animated Series).
The 19th episode of the animated Star Trek airs on NBC, featuring scenes set in the Enterprise’s “recreation deck”, which can simulate any environment – more than a decade before Star Trek: The Next Generation’s holodeck.
The fourth episode of Land Of The Lost premieres on NBC. This episode, written by SF novelist Larry Niven, guest stars Walker Edmiston, though not in the role he will play for much of the remainder of the series.
The fifth episode of Land Of The Lost premieres on NBC. This episode is written by SF novelist Norman Spinrad.
The sixth episode of Land Of The Lost premieres on NBC. This episode, written by former Star Trek cast member Walter Koenig, introduces the character of Enik.
The 22nd episode of the animated Star Trek airs on NBC, bringing both the second season and the animated series to a close. This episode introduces now-retired Robert April, the name originally envisioned by Gene Roddenberry for the captain of the Enterprise.
The seventh episode of Land Of The Lost premieres on NBC, as the Marshall children nearly fall victim to mind-altering Sleestak technology.
The eighth episode of Land Of The Lost premieres on NBC, as the Marshall kids find a strange device that controls both the floating pylons and the weather.
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