Margaret Hamilton
In real life, Margaret Hamilton was an outright saint. Before becoming an actor, she worked as a public school teacher. After her huge success in “The Wizard of Oz,” she gave back to the community as much as she could, serving on boards of education and teaching Sunday school well into her life. She appeared in many TV shows and films through the rest of her acting career, until dying of a heart attack at age 82 in 1985.