John-Michael Howson has written collections of short stories, children's fiction, and works about the cinema. He co-wrote the scripts and appeared as Fifi the Bear in the popular children's series The Magic Circle Club (1965-1967), and created the long-running children's television programme Adventure Island (1967-1972). In addition to writing most of the script for the latter series, Howson also played the part of Clown. Among his other early television writing credits are Hey You (1967 television comedy).
Howson has written for and appeared on many Australian television and radio programmes since the early 1970s, and later came to be a regular guest on the Midday Show, reporting on entertainment and celebrity news from the United States. He co-wrote the Australian musical Shout! (2001), based on the life of Johnny O'Keefe.