Bosley's license plate is 803 ZUM at Big Teddy's, but 592 ZIY when he meets Kelly and Julie the next morning at the studio.
The footage of Kelly, Julie, and Bosley walking onto the Mammoth Studio lot is shown three different times in the episode.
When Jake confesses to Mr. Tobias in the projection room, Kelly's arms cross and uncross between close-ups and long shots.
Before the filming of the big fight scene for "Marian and her Merry Maids" near the end of the episode, the same two extras and a prop man are seen entering Stage D Exit A twice in a row as the same footage is reused.
A close up during the Lady West filming reveals pieces to white fabric on the fan that show the airflow but no fabric is visible just before or just after the close up. The fabric is visible when stunt people later jump.
During the fun mayhem fight scene, Julie and Kris are in front of the camera and are in shot, just standing and watching. Bosley after reading something from Charlie, walks into shot to touch Julie saying "Hey! Hey!" to pull the Angels away. Nobody complains.