William Friedkin made his directorial debut in the comedy movie "Good Times" in 1967 starring Sonny Bono and Cher, who appeared as themselves in this musical parody of various genres, including mysteries, westerns, Tarzan movies and spy thrillers. A parody is a creative work designed to imitate, comment on, and/or mock its subject by means of satirical or ironic imitation. The connection between Sonny Bono, Cher and William Friedkin would come full circle in January of 1974, when the Sonny and Cher Comedy Hour on Channel 7 was advertised in many newspapers. The Comedy Hour was to feature a satirical (mocking) presentation of The Exorcist movie by showing the comedic reactions of patrons leaving the cinema. This can be viewed on YouTube.
The Sonny and Cher Comedy Hour was due to be aired on Wednesday, January 30th 1974, the exact day the Zodiac Killer had likely hoped his Exorcist letter would be published by the San Francisco Chronicle. So were the words "satirical" and "comedy" deliberately chosen to coincide with this show?