Lucy and Viv invent two new dances at "The Hairy Ape": the Lighthouse and the Chimpmunk.
Goof: When Kasten and Lucy are reciting common sayings, Phil Silvers says one backwards saying "A penny earned is a penny saved."
Thanks to Miss Pat, all Mr. Mooney has to do to fall asleep is say to himself, "Nighty Nite Snooky-Ookums."
Miss Pat had broken Mary Jane of biting her nails through hypnotism.
Miss Pat is appearing at the Royal Club.
Milton Berle has an uncredited walk-on cameo.
Lucy reveals that her maiden name is MacGillicuddy, the same maiden name as her I Love Lucy character, Lucy Ricardo. Earlier in thes series (season 2's Lucy's College Reunion) she says her maiden name is Taylor.
Photos line the walls in the hallway outside of the movie studio's lunchroom, including Bob Crane's Hogan's Heroes headshot.
Neither the Marine sergeant or Lucy Carmichael have met Gomer Pyle before, but both seem to know he's a "knucklehead" when all he's done is informs them he is Carmichael's replacement.
Although Lucy was supposedly mistaken for a man throughout this episode, her hair wasn't "cut" nearly as short as the men and Lucy's uniform is the only one to not have a Marine emblem on the pocket.
Jim Nabors has a cameo appearance as Gomer Pyle in this episode.
Notice when Lucy receives the letter from her son in the beginning of this episode, she calls him Jimmy instead of correctly calling him Jerry. When Lucille was handed the script for the first time, she complained to the crew that they had wrote the wrong name in. She was reminded that it was Jimmy Garrett that portayed Jerry Carmichael. Lucille still demanded that she was right and the crew left it her way.--according to Geoffrey Mark Fidelman's "The Lucy Book"
Carol sings "Hard-Hearted Hannah".
Carol Burnett uses her trademark Tarzan yell in both this and the following episode.
Jack Benny appears as himself in an uncredited voice-over (telephone) cameo.
Lucy gets offers to be the entire women's U.S. Olympic team, and endorsements for breakfast cereal and pet vitamins.
Lucille Ball sings "My Heart Belongs to Daddy" in this episode.
Robert Stack's character mistakenly hands Lucy a card that says "Rosemarie's School for Models." This is an inside joke by the writers; Stack's wife was named Rosemarie.
After washing the sweater in boiling water, it shrinks so much it fits his dog, Lightening.
Frank's dog is a basset hound named Lightening.