Recently Watching A Very Brady Christmas with my daughter caused me to wonder how many Brady reunions there have been since the cancellation of the original series. My research has revealed that there have been three spin-off series from the original: a variety show, a sit-com, and a drama. The original series is available in its entirety on DVD.
The first reunion was the Brady Variety Hour in 1977 which lasted only nine episodes. The second reunion was to be a TV movie entitled The Brady Girls Get Married in 1981. The movie was re-edited into the first three episodes of a new sit-com called The Brady Brides which told of Marcia and Jan's married life. The series ran 10 episodes.
The TV movie A Very Brady Christmas aired in 1988. The high ratings led to yet another spin-off series called The Bradys which was more dramatic than comedic. It ran six episodes which have since been re-edited into three TV movies.
Reuniting the entirety of such a large cast proved challenging, with the original Jan missing from the variety hour, the original Cindy missing from the Christmas movie, and the original Marcia missing from the drama. Each were replaced with other actors. The Brady Girls Get Married (which became the first three episodes of "The Brady Brides") was the only reunion that featured the entire original cast.
The most successful Brady series outside of the original was actually a cartoon called "The Brady Kids" airing from 1972-1974, lasting 22 episodes. Since the series there have been two theatrical films which spoofed the original series, both featuring all new actors. The Brady Bunch Movie and A Very Brady Sequel were released in 1995 and 1996 respectively. A third movie was released to DVD in 2002 called The Brady Bunch in the White House.
As is obvious from the picture on this post, the Bradys also had their day in comics when Dell published two issues, complete with photo covers, in 1970. A promotional comic, Brady Bunch Kite Fun Book appeared in 1976.
It has been noted that the original series and reunions have put the Bradys on all three networks at various times. This feat isn't unique to the Bradys, however, since James Garner has played the role of Bret Maverick on all three networks as well. The original Maverick series aired on ABC, the New Maverick/Young Maverick on CBS, and the Bret Maverick series on NBC.