First of all, there were many other episodes dealing with Blanches fading looks/feeling older. Also, during this entire episode, Sophia uses the "Fess Parker" joke against Dorothy a whopping FIVE times. Were the writers feeling lazy when they wrote this one?
When you go to a hospital you tell the admission's desk, or in some case's the security guard in the lobby who you are there to see. If Blanche checked herself out, whoever the girls checked in with would have told them Blanche was gone before they even got to her room. You're not allowed to wander the halls of a hospital ward. Also, the name of the patient is usually on the outside of the door to their room. They would have noticed that Blanche's name wasn't on the door.
When Blanche tells the girls she wants to have plastic surgery, Rose says she doesn't believe in plastic surgery and is too afraid to ever have it done. But in the Vacation episode earlier in the season when stranded on the desert island, we find out Rose has had a nose job.
This episode is the only time Rose going to junior college is ever mentioned. Also, in Yes, We Have No Havanas, Rose reveals she didn't graduate high school because she contracted mono and slept through her last course and the graduation. Wouldn't she have to have graduated high school first to be admitted into a junior college?
Rose: Oh, Blanche, how do you feel about performing in front of a video camera?
Blanche: I think it's okay as long as you've already had at least three dates.
Blanche: I'm thinking of getting Bette Davis' eyes and Cheryl Tiegs' nose and Carol Burnett's chin.
Dorothy: I think you can get that chin from a catalog.
(The girls are watching Rose's video.)
Rose: That's Sophia walking into the kitchen.
Sophia: I didn't know Fess Parker was in this picture.
Dorothy: Ma, what're you doing?
Sophia: I'm mugging for the camera.
Dorothy: You're mugging me! You're stealing money from my pocket!
Sophia: I'm checking to make sure you have the exact change for the bus...now I'm stealing.
This episode was videotaped on January 16, 1987.
Also, during the first couple seasons of "Mama's Family", Betty White and Rue McClanahan were both costars with Carol Burnett.
In the reference to Carol Burnett being mentioned in this episode, Betty White was a frequent guest on her show and was involved in the Mama's Family sketches.
The background shot during the closing credits features Dorothy, Blanche and Sophia (on couch), watching Blanche's video, while Rose looks on.
Sophia: Excuse me, Miss Marple, I'm new to this detective stuff.
Miss Marple is one of mystery writer Agatha Christie's most famous sleuth characters.