The Brady Bunch was created by the legendary Hollywood
TV producer Sherwood Schwartz
, whose other smash hit situation comedy
was Gilligan's Island
. The show was a major moneyspinner for the underwriters of the project, the ABC
network in the USA
The show's premise was the new-for-the-time concept of the blended family (this one being the product of a widow and a widower, rather than the still looked-down-upon divorce). Writeups above this one fill out the character's details, with the notable excepton of the family's pet dog, Tiger!
The Brady Bunch featured terrific acting from the actors listed in the writeups above, and also featured excellent character actors for bit-parts outside of the Brady residence, such as Alice's long-time boyfriend Sam the Butcher (played by Allan Melvin).
The less-well received followup productions were:
The Brady Bunch Hour (1977)
The Brady Brides (1981)
The Bradys (1990)
Research sources include TV Tome, Sitcoms Online, and TimVP.com