You Ought to Be in Pictures (1940)

Continuity mistake: When Porky is searching for his contract in the waste-paper basket in Leon Schlesinger's office, he leaves some paper on the floor. But when Leon tells him to go back to work, we cut to Porky and the paper has gone.

Visible crew/equipment: When Porky Pig is beating up Daffy Duck off-screen, the shadow of a camera can be seen on the wall.

Continuity mistake: When Daffy Duck persuades Porky Pig to quit in order to pursue a career in feature films as Bette Davis' leading man, there is a coat hook on the wall that keeps disappearing and re-appearing between shots.

Trivia: Chuck Jones and Bob Clampett can be seen in the crowd rushing out from the studio during the lunch break.

Trivia: Various members of the Warner Brothers animation staff appear in the short. Michael Maltese plays a studio cop, Gerry Chiniquy plays a director and Henry Binder appears as a stagehand who throws Porky off a soundstage after his sneezing interrupts the shooting of a ballet film. But Mel Blanc dubbed all their voices, as the footage was shot silent.