The movie that Jillian and Spencer watch together is Penny Serenade (1941), which also centers on a dramatic child rearing.
Nick Cassavetes plays Captain Streck. Nick's father, John Cassavetes starred in Rosemary's Baby (1968) which bears many similarities to this film.
Clea Duvall (Nan) can be seen wearing blue contacts during several scenes in the movie. In some scenes, she sports her natural brown eyes.
When Mr. Reese tracks Jillian to the toy store, he opens his briefcase to show her documents. The lock code was set to '666'.
Donna Murphy once starred with Mia Farrow in another movie. Mia also starring in Rosemary's Baby on which this movies premise has a more SciFi than Supernatural overtone.