The 30th episode of Gene Roddenberry’s science fiction series Star Trek premieres on NBC, kicking off the show’s second season with its first-ever glimpse of Spock’s home planet, Vulcan, as well as one of the best-known (and most parodied) fight scenes in the history of television, accompanied by some of the best-known TV soundtrack music ever. 
Stardate 3372.7: Spock begins acting strange – even violent – as, unknown to the rest of the crew, he enters the Vulcan mating phase that strikes adult male Vulcans every seven years. Kirk must divert the Enterprise from a tight schedule to return Spock to Vulcan so his mating ritual may be carried out. But on arriving, it is discovered that Spock must compete with a gladiator of his prospective mate’s choice – and that turns out, on the spur of the moment, to be Kirk.
written by Theodore Sturgeon
directed by Joseph Pevney
music by Gerald FriedCast: William Shatner (Captain James T. Kirk), Leonard Nimoy (Mr. Spock), DeForest Kelley (Dr. Leonard McCoy), James Doohan (Mr. Scott), George Takei (Lt. Sulu), Nichelle Nichols (Lt. Uhura), Celia Lovsky (T’Pau), Arlene Martel (T’Pring), Lawrence Montaigne (Stonn), Majel Barrett (Christine Chapel), Byron Morrow (Admiral Komack)
Notes: Spock’s difficult relationship with T’Pring is well-documented in Star Trek: Strange New Worlds (Spock Amok, The Serene Squall, Charades), the first of which firmly establishes that interfering in Vulcan relationships will get you hit with a lirpa.
LogBook entry by Earl Green