#9 Robert Vaughn PhD in Communications
Actor Robert Vaughn made his name playing Napoleon Solo in the American series The Man from U.N.C.L.E. that was broadcast on NBC between 1964 and 1968. Two years later, in 1970, he walked off with a PhD in communications from the University of Southern California. He is one of the few celebrities to have earned a PhD in the same area of specialty that they work in, namely drama. Vaughn published his dissertation in book form two years after getting his PhD. It is called Only Victims: A Study of Show Business Blacklisting.