The scene where Bob Newhart is flying a white kite is a veiled reference to the production company, Electric Entertainment, which uses a white kite for its logo.
At 29:36, Emily tells the librarian, "ne me derange plus, d'accord? Ici, c'est a moi." This is French for, "Don't bother me anymore, okay? Here, this is mine."
Vampire bats are native only to Central and South America.
This was directed by Jonathan Frakes. As an actor, he is perhaps best known as Commander William Riker on Star Trek: La nouvelle génération (1987). As a director, he has been nicknamed "Two Takes Frakes" for the usual number of attempts before he is satisfied with a scene.