Trivia: Jeff Tracy's five sons were named after Mercury astronauts - Scott Carpenter, Virgil Grissom, Alan Shephard, Gordon Cooper and John Glenn.
Trivia: In the dream sequence, little Gilligan was played by Bob Denver's son Patrick.
Trivia: John Astin (Gomez), Carolyn Jones (Morticia) and Ted Cassidy (Lurch) are the only actors to appear in all 64 episodes of the show.
Samantha Fights City Hall - S5-E9
Trivia: Because Erin Murphy, who played Tabitha, was ill, her fraternal twin sister Diane took her place in this episode. By this time, Erin and Diane didn't resemble each other as much as they once did, and it was obvious to regular viewers of the show that it wasn't the Tabitha they were used to seeing. The producers received several letters asking "Who was that?"
Trivia: Beverly Owen played the part of Marilyn for thirteen episodes believing the show would flop. When The Munsters became a hit, she started crying because of being away from her boyfriend who lived in New York. She was let go and the part of Marilyn went to Pat Priest who had such an uncanny resemblance to Beverly that people watching the show never knew the difference.
Trivia: Thrush, U.N.C.L.E.'s nemesis organization, was an international bad-guy conglomerate with the single-minded goal of taking over the world. Though "Thrush" was never an acronym on the show itself, U.N.C.L.E. novelist David McDaniel assigned it a meaning that became fan canon: he called it the Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity. That pretty much described Thrush's nefarious ambitions to a T.
Trivia: The name of Gomer Pyle comes from writer Gomer Cool and actor Denver Pyle.