Trivia: Two of the "Sound of Music" kids had guest roles: Nicholas Hammond, who played the oldest son Friedrich, was in "The Subject Was Noses", and Kym Karath, who played the youngest child Gretl, was in "Cyrano de Brady".
Trivia: The house that is used for the shots from outside (the introduction) has only one storey. The window is fake, and was added simply to give the illusion that it's a two-story house.
Trivia: Whenever they talked on the phone there wasn't even a stagehand on the other end. Mike was voted the best at talking to silence.
Trivia: Susan Olson, who played Cindy, loved the TV show 'Family Affair' and begged her mother to give her a 'Buffy' hairdo. The producers loved her hair that way and so for several seasons, she wore it that way (and grew to hate it).
Trivia: The reason that there is no glass in the sliding back door, and the reason for a similar mistake in the popular sixties show Bewitched is that real glass is generally not used in windows in movies and TV shows, because the glare drives the camera crew nuts.
Trivia: Florance Henderson's hair style on the show was done on purpose. Few knew that since the 1950's she lost all hearing in both ears. The left hearing came back, but she had a hearing aid over her right ear.
Suggested correction: In the episode "A Fistful of Reasons" from Season 2, her hair was short and her ears fully showed (unless the hearing aid was so small it was BEHIND her ears).
Trivia: Some episodes featured cast members or guest stars from Gilligan's Island (both created by Sherwood Schwartz). Jim Backus (Mr. Howell), Natalie Schaefer (Mrs. Howell), and Denny Miller (Duke the Surfer, Tongo the ape man) all appeared in at least one episode of the series.
Trivia: Both Chris Beaumont and Hope Sherwood (Sherwood Schwartz's daughter) played three different characters in various episodes throughout the series.
Trivia: Each of the actresses playing the three girls were re-cast in a future Brady-related sequel, TV show or movie. A different "Jan" in "The Brady Bunch Variety Hour" (1976), a different "Cindy" in "A Very Brady Christmas" (1988), and a different "Marcia" in "The Bradys" (1990). The only sequel to feature the original three actresses together was "The Brady Girls Get Married" (1981). The other six characters always contained the original cast for all of these.
Trivia: According to one single line in one episode, it's revealed that Alice worked for Mike Brady and his boys while the first Mrs. Brady was still alive, meaning Alice was the Brady's housekeeper during two Mrs. Brady eras.
Trivia: Mike Brady and Bobby Brady swapped character names with their real life first names. Mike's real name was Robert and Bobby's real first name is Mike.
