1964: Desilu Studios tries to sell Star Trek to CBS, which declines and decides to air Lost in Space instead.
Sept. 1966: NBC broadcasts first episode, The Man Trap: Kirk outwits a vampire-like alien who has eyes for McCoy.
March 1967: McCoy says, "Dammit, Jim, I'm not a bricklayer, I'm a doctor!" First variation of this phrase.
1967: Even at its ratings peak, Star Trek ranks No. 52, behind such shows as Mr. Terrific and Iron Horse.
Dec. 1967: Trouble with Tribbles, peak of Star Trek humor.
Summer 1968: NBC announces cancellation of series but receives 1 million letters of protest...