Phil Donahue started his eponymous television talk show in 1967 in Dayton, Ohio. Today, it is the most popular talk show on daytime t.v. The show includes celebrity interviews, but also tackles controversial social issues, and heavily involves its audience. Donahue's latest book is "The Human Animal," which surveys what experts have to say about human nature, and is a companion to a t.v. series of the same name. Donahue joins the show to discuss his career, his conversion from a chauvinist to a feminist, and being a single parent.