Yes, the TV series “Dragnet” (NBC, 1952-59, 1967-70) was based on real cases.
It may have been the original true crime drama, with all shows fashioned from cases found in Los Angeles police files.
All scripts were reviewed by the police and the Los Angeles City Attorney’s office.
Elizabeth Taylor and Richard Burton appeared on “Here’s Lucy” (CBS, 1968-74) in 1973.
Old Gold cigarette packs started dancing in TV commercials in 1950, in a spot called “Dancing Butts.” Women wearing huge Old Gold packages did the dancing.
The Fugitive’s name (“The Fugitive,” ABC, 1963-67) was Dr. Richard Kimble, played by David Janssen.
Ian Carmichael was the original Lord Peter Wimsey on the PBS TV series. Edward Petherbridge has also played the role. The “Lord Peter Wimsey” stories originally aired on the BBC in Great Britain (1972-75, 1987) and have been carried by PBS on “Masterpiece Theatre” (1971) and “Mystery!” (1981).
Just before reporter Edison Carter (Matt Frewer) crashed a motorcycle, he saw the words, “Max Headroom, 2.3 m.” on the TV series “Max Headroom” (ABC, 1987). His memory impulses create a new character, Max Headroom.
Veteran character actor George Tobias played Abner Kravitz on the TV series “Bewitched” (ABC, 1964-1972). Alice Pearce was the original Gladys Kravitz; Sandra Gould replaced her when Pearce died in 1966.