While Daniel Stern was the narrator for the series, Arye Gross was the narrator for the pilot episode.
The house used for exterior shots of the home in the opening sequence as well as various points throughout the show's run is 516 University Ave., Burbank, California.
Part of the show's running storyline is a falling-out between Kevin and Winnie, who becomes a background character for several months, until she and Kevin reconcile. The main reason for this part of the storyline was that actress Danica McKellar had had a growth spurt, and she and star Fred Savage, already shorter than McKellar, didn't look right standing together. The characters reconciled after Savage began to catch up in height.
The character 'Wayne Arnold' was ranked #7 in TV Guide's list of "TV's 10 Biggest Brats" (27 March 2005 issue).
Rumors on the Internet said that the role of Paul Pfeiffer was played by rocker Marilyn Manson. Although this is believed widely it is not true. That role was played by Josh Saviano.
In the last episode of the show, the voice of the narrator's kid at the end is Daniel Stern's son Henry - the producers wanted them to end the show talking to each other.
Jack Arnold's birthday is November 6th, 1927. He died in 1975, after a heart attack.