Joss Whedon
Whedon has been said to be the world's first third-generation television writer. His father is Tom Whedon, a writer for The Electric Company in the 1970s and The Golden Girls in the 1980s. His grandfather is John Whedon, a writer for The Donna Reed Show in the 1950s. His brother, Zack Whedon, is a writer on HBO's Deadwood.