Five years after this episode aired, Maureen McCormick, who played Little Endora, would go on to play Marcia Brady on The Brady Bunch. (edit) In Darrin's dream about what life would be like with a bunch of little witches and warlocks running around the house, one of his and Sam's children is named Rebecca. Ironically, when Elizabeth Montgomery became pregnant during the 1969-1970 season, the one where Adam was born, she gave birth to a daughter that she named Rebecca. (edit) This episode was filmed on October 22, 1964 (edit)

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At one point, Sam zaps a backyard swimming pool for a quick dip on a hot day, then zaps it away. Gladys sees all this from across the street, but Sam and Darrin's backyard was off the rear of their house and could not be seen from the street. (edit)

The title alludes of the common phrase, "...and Baby makes three." (edit)