He was one of many main stars of the Seventies, first as a singer/songwriter after which as a part of the long-lasting Norman Lear comedies Mary Hartman, Mary Hartman and its spinoff, Fernwood 2 Evening.
Immediately, the wit and charisma Mull dropped at his craft was fondly remembered by his friends as phrase of his passing at age 80 unfold.
A few of the reactions: