The Talk of Hollywood (1929)

Schlock-movie producer J. Pierpont Ginsburg, after declaring, in a Yiddish accent, that "talking pictures are in their infantry," decides to put all of his savings into a big-budgeted musical, starring the sensation of Paris (with a bad French accent), Adore Renee, and a swishy leading man, Reginald Whitlock. Meanwhile, his daughter, Judy Ginsburg, gets involved in a romance with Ginsburg's Gentile lawyer, John Applegate. His efforts aren't helped any by the projectionist who mixes up the sound-disc reels, with the images not matching the dialogue and sound effects, during a showing for prospective film buyers and exhibitors.