Calkin, one of the show's original creators and co-hosts, departed in 1976 for a position at KUSC, and was not replaced. After co-host/engineer Mitchell Harding departed from "Hour 25" in 1981 to take a position at KCRW-FM, Hodel co-hosted the show with science fiction and television writer Mel Gilden, who was then just beginning his career. At this same time, Harding's engineering duties were taken over by Joe Adams, who would occasionally co-host shows that featured discussions of various comics. Later, Burt Handlesman, who was often affectionately identified on-air as "Burt Handlesman, Crack Engineer", would become the program's engineer and announcer. As well, for several years in the early 1980s, Bill Warren was a once-a-month "media" co-host.