The April 4, 1968 broadcast of season four, episode twenty-eight, "I Confess", was interrupted by ABC News for coverage of the assassination of Dr. Martin Luther King, Jr.
Gladys, what are you doing?
Gladys Kravitz: I came over for a snoop, uh, a scoop of sugar. I hope I'm not disturbing you.
Whenever Samantha says, "Aunt Clara," she pronounces "aunt" like "ant." However, on more than one occasion, Samantha pronounces "aunt" like "ont," when referring to Aunt Hagatha and Aunt Enchantra.
Whenever Samantha's cousin Serena appeared on the show, the credits for the episode listed the actress as "Pandora Spocks". This was Elizabeth Montgomery's idea as an inside joke. Elizabeth Montgomery played Serena.
During the first season, episodes featured a longer version of the familiar opening credits that incorporated a promotion for series sponsor Chevrolet (including an extra piece of animation showing Samantha and Darren riding a broomstick). This opening was replaced by a standardized opening for syndication. The DVD release of season 1 uses the syndicated version of the opening credits.