Harry Allen (actor) film role was in the 1923 silent film, "The Last Moment", in a supporting role. In his career Allen appeared in over 100 films, mostly in supporting and smaller roles. Some of the more notable films he appeared in include: "Of Human Bondage" (1934), starring Bette Davis and Leslie Howard; the Marx Brothers' classic, "A Night at the Opera"; the original "Mutiny on the Bounty" (1935), starring Charles Laughton and Clark Gable; William Wyler's 1942 Academy Award-winning film, "Mrs. Miniver", starring Greer Garson, Walter Pidgeon, and Teresa Wright; "Jane Eyre" (1944), starring Orson Welles and Joan Fontaine; the Mickey Rooney
Louis B. Mayer the top box office hit of 1942. President Franklin D. Roosevelt and British Prime Minister Winston Churchill both loved the film, said historian Emily Yellin, and Roosevelt wanted prints rushed to theaters nationwide. The Voice of America radio network broadcast the minister's speech from the film, magazines reprinted it, and it was copied onto leaflets and dropped over German-occupied countries. Churchill sent Mayer a telegram claiming that ""Mrs. Miniver" is propaganda worth 100 battleships." Bosley Crowther (1960 biographer of Mayer, below), wrote in his "New York Times" review that "Mrs. Miniver" was the finest film yet made about the war,