Trivia: Miranda Cosgrove, who plays Summer Hathaway, actually has a good voice and plays guitar. She had to take a 45-minute class to learn how to sing badly for the scene where she sang "Memories."
Trivia: When Ms. Ungermyer takes Ethen's headphones off he is listening to "Girl in the Band" by Haley Duff, Hilary Duff's sister.
Trivia: Marc McClure, who plays the delivery driver named Boris actually played Anna's (she was then called Annabelle) crush, Boris, in the original "Freaky Friday" (1976).
Trivia: Chapter 17: At home with the Triplets. After entering the apartment building, the Triplets, Madame Souza, and Bruno climb multiple flights of stairs. On their right, they pass a bathroom with an open door with flies swarming about, taking off then landing again on the contents of an unflushed toilet. If you glance at the turd in the bowl, you will see that it is in the shape of a most famous mouse. (00:41:15)