Senoufou, Puzo's original novel has so much plot that, to cover it all, Coppola and Co had to make two films: The Godfather and The Godfather II. (Don't bother with Godfather III; a sad echo of its predecessors, it's boring beyond belief and obviously made to capitalize on the several Oscars won by Godfather II.)

In retrospect, it's interesting that the films could leave out most of the novel's sex scenes without losing any useful plot elements. I guess Puzo could have been using bad sex -- then a very daring subject of popular fiction -- to show the squalor of his characters' lives and the venality that it implanted in them. The film-makers could show all that with scenery, set-dressing and nuances of interpersonal behaviour without bothering with detailed depictions of bedroom antics.