8. Patty Duke
Patty Duke achieved a show business trifecta, succeeding in film, television, and on Broadway. Best known for her Oscare-award winning role as Hellen Keller in A Miracle Worker and her oddball role as identical cousins on The Patty Duke Show, she later went on to serve as president of the Screen Actor’s Guild and publish two best-selling books. As if all that wasn’t incredibly impressive, she managed to squeeze in two PhDs and endless hours mental health advocacy.