Visible crew/equipment: In the final musical number "Strictly off the Record", you can clearly see the shadow of the microphone boom during part of the number.
Yankee Doodle Dandy (1942)
1 visible crew/equipment mistake
Directed by: Michael Curtiz
Starring: James Cagney, Walter Huston, Joan Leslie, Richard Whorf
Continuity mistake: In the dressing room scene just before Mr. Albee's visit, as Jerry Cohan is talking he wraps a scarf around his neck. He leaves one end outside of the dressing gown, but in the next shot, both ends are tucked in.
George M. Cohan: Thanks, Sam. It'll be great as long as those critics don't start to eat off my leg.
Sam Harris: Oh, don't worry about the critics! You got a smash hit! It's in the air, kid! It's in the air! You can't stop anything that's in the air.
Trivia: During production, James Cagney broke a rib whilst filming a dance scene. In spite of the injury, he still managed to complete the sequence.