According to Jerry Schatzberg, Gene Hackman was hard to work with and argued with everyone on the set including his brother, Richard Hackman, who was working as his stand-in. To get back at Gene, Schatzberg gave Richard a part in the film. But Gene ended up being delighted that his brother was in the film.
Gene Hackman was asked in a rare interview about his favorite movie of all the ones he did , He said its really hard to pick its just like picking one of your children , However he said " ...there was a movie i did years ago , didnt get much press , it was called Scarecrow."
When Max and Lion go into the diner to have breakfast early in the film, the song playing on the jukebox is the top 40 hit "Silver Moon" sung by former Monkee Michael Nesmith, then with the First National Band.