Ackerman was the editor and principal writer of the American magazine "Famous Monsters of Filmland", as well as an actor, from the 1950s into the 21st century. He appears in several documentaries related to this period in popular culture, like "Famous Monster: Forrest J Ackerman" (directed by Michael R. MacDonald and written by Ian Johnston), which premiered at the Egyptian Theatre in March 2009, during the Forrest J Ackerman tribute; "The Ackermonster Chronicles!" (a 2012 documentary about Ackerman by writer and filmmaker Jason V Brock); and "Charles Beaumont: The Short Life of Twilight Zone's Magic Man", about the late author Charles Beaumont, a former client of The Ackerman Agency.