Final appearance of Martha Hartley.
The opening montage has been changed for the final season. Bob and Emily depart for work from their new penthouse apartment, leaving Howard at the dining table. Bob arrives at his office, and he and Jerry receive mail from Carol instead of Bob picking up Jerry's empty coffee cup.
Fearless Fosdick was a Dick Tracy parody character featured in Al Capp's "Lil' Abner"comic strip.
During the last episode of the previous season, Carol announces that she's pregnant; however, in this season premiere, she's no longer pregnant, and there's no explanation as to why--as if she never was pregnant. The writers likely decided not to pursue the baby storyline and simply chose to drop it. Also, Emily announced that she was pregnant too.