This is the only Woody Allen film in which both of his frequent collaborators
and longtime companions Mia Farrow and Diane Keaton appear.

Sally White's becoming a celebrity gossip reporter after her radio career fizzles out
is based on real-life actress-turned-gossip Hedda Hopper.

The story of Kirby Kyle, the ill fated baseball player, is a parody of former Chicago White Sox pitcher
Monty Stratton, whose promising career was derailed after he lost part of his leg due to a hunting accident.
Stratton attempted a comeback, and then retired. His life was made into a movie: The Stratton Story.

William H. Macy appears not only as a radio voice,
but also as one of the radio actors at the Pearl Harbor Announcement.

In the 1940s, the term "Radio Days" was often used to describe that type of employment for those in the entertainment field.

The scene where Joe sees a German U Boat at the beach has some basis in fact.
Some U Boats were sent to America on secret missions,
and had to enter New York harbor by entering through the Rockaway inlets to get into Lower New York bay.