Donald O'Connor, who played Fred, was a dancer, most famous for being in Singing in the Rain
Fran says her star sign is Libra (September 23 - October 23), but in "A Plot for Nanny" they celebrated her birthday in January. Meaning she would be a Capricorn (December 22 - January 19).
When Jack enters the house, Fran closes the door. Right after they're done with the small talk, the door is open again, and Fran closes it again.
Fran gets her third marriage proposal since the show started.
The french tutor keeps saying "je t'adore" which is french for "i adore you"
When Fran spits out the shrimp the trajectory did not seem to be high enough for it to land in a woman's cleavage.
The dress Fran wears on her date with Mike is the same dress she was wearing in her dream in "Your Feets Too Big".
In the opening scene, Fran and Val had popcorn thrown at them for blocking the screen. Look at Fran's hair during the opening scene. The amount of popcorn in fran's hair goes from 3-4 kernals in one shot to 6-7 in the next and then reduces back down again.
Fran tells Elizabeth Taylor she thought about getting married once, even though she has said yes to two marriage proposals (Danny and Julius) and one fake (Maxwell).
Maxwell says the children 'left for school an hour ago', but seconds later, Gracie enters.
Every time Maxwell Sheffield's line in the beginning about Fran being stupid is quoted, his words are twisted and mixed up.
When Fran asks Todd which famous person wore her dress before she did, Todd tells her that it was Wesley Snipes. This is most likely an allusion to the 1995 movie To Wong Foo Thanks For Everything, Julie Newmar, in which Wesley Snipes plays a drag queen. He never actually wears that particular dress in the movie.
Goof: When using a pay telephone, Fran starts to dial before the coin has dropped.
This episode is named The Unkindest Cut on the complete third season DVD set.
When Fran is wandering around the studio looking for a restroom, she mutters a song she makes up to the tune of the Bonanza theme song. Fran mutters, "Meanwhile, where do ya pee?", but the closed caption says, "Grandma will get paid."
*Edit* According to the closed-captions on the third season DVD set, it says "Meanwhile, where do you pee?" for sure.
Fran tells Mr. Sheffield's mother that she has been living with him for three years, but she has actually only been living there for two.
Watch closely: right in the beginning of the episode when Fran goes to the kitchen to pick Mrs. Sheffield gift, she turns right, but the kitchen is on the left! There's nothing on the right, only the backstage.
In the scene where Fran faints you can see the belt display shake and move around behind Mr. Sheffield. It's as if she was moving around and bumped it a few times.
In this episode Fran says her birthday is in July, but in "A Plot for Nanny" they celebrated her birthday in January.
Brighton and his father play chess and the game ends in check mate. There are only four pieces (two black and two white) on the chess board located in the center of the board. There's no way to make a check mate with so few pieces in that location.