I think the thread has strayed from the key question: >Are there other films >that plug particular social/political agendas and/or the filmmakers'/authors' >works with elements of setting and such?< But in part it may be because of that troublesome word "author"--the whole knotty question of who is the auteur of a movie. For example, in the heyday of the studio system, you often found plugs for the studio's stars in films in which they didn't appear: e.g., MGM rising star Judy Garland's "You Made Me Love You" serenade to MGM superstar Clark Gable's photograph in "Broadway Melody of 1938," or the Hope/Crosby cameos in each other's films for Paramount. And if you consider stars as auteurs, there's no more self-referential movie than "Sunset Boulevard," in which the character of Norma Desmond is built up out of pieces of Gloria Swanson's life: the film clip from "Queen Kelly," the casting of Erich von Stroheim and Cecil B. DeMille as Norma's ex-directors--and especially DeMille's greeting Norma as "young fellow," his pet name for Gloria. And as far as in-joke plugs go, one of the best I can think of is Barbra Streisand's telling Ryan O'Neal "Love means never having to say you're sorry" at the end of "What's Up, Doc?" Etc. --Charles Matthews.