John has recorded 65 audio books.
John has five children: Jessica, Michael, Peter, Jacob, and Max.
John attended UCLA.
John's father is the famous pianist Artur Rubinstein.
John has been married twice. First to Judi West from 1971 to 1989 with whom he had two children and the second time to Jane Lanier from 1992 to 2002 who he had two children with as well.
He won an Emmy Award nomination for his recurring ex-husband role on the popular drama series "Family" (1976).
John was the original Pippin in the Broadway cast of Bob Fosse's 70s musical "Pippin."
John won a Tony in 1980 for "Children Of A Lesser God."