When Pauline enters the bakery her shawl moves from just below her shoulders to over her shoulders continuously through the scene.
The silent movie exhibited at the festival is shown at an almost CinemaScope aspect ratio (roughly 2.2:1) instead of the correct silent film ratio of 1.33:1.
Alfred claims that there should be nothing alive in the cabinets of a properly-run kitchen. An experienced butler should know that many kitchen cabinet items are alive, including yeast and mushrooms.
Although Mr, Van Jones is supposed to be outraged at the Riddler's silent film troupe at the beginning of the film, Francis X. Bushman, who portrays Van Jones, is seem smiling and laughing during their performance.
In all previous episodes, Batman states he never gambles. However in the Commissioner Gordon's office he deduces the Riddler will be at Mother Gotham's Bakery and bets Gordon a dollar that he is right.