About 8:37 into the episode, the camera view zooms out a tad, but it's unsmooth and looks as if the camera shakes.
Franchesska Berry is a real life dance instructor in the Los Angeles area.
Dwayne is wearing the same shirt in this episode that he wears in the opening credits.
During the concert, the Doobie Brothers perform "Take Me In Your Arms (Rock Me)" with Michael McDonald singing the lead. In reality, Tom Johnston (who left the band in 1975) sang lead on the song.
This was the only two-part episode that was ever videotaped during the series' run.
Mabel King does not appear in this episode.
When Shirley answers the phone to take a water balloon order, the order comes from the Kappa Alpha fraternity and while she takes the other order, it comes from the Beta Sigma fraternity. Kappa Alpha symbolized Ernest Thomas' fraternity, Kappa Alpha Psi, Inc. It is safe to assume that Beta Sigma symbolized Phi Beta Sigma Fraternity, Inc.
This is the first time the audience finds out who "Rob" of Rob's Place really is. Also, we learn that Shirley is a high school dropout who supports her other siblings through her paycheck at Rob's. This episode is one of the few episodes where Shirley and Mrs. Thomas actually are seen together.
Because this episode was aired out of order, Raj and Dee meet Loretta for the first time, despite the fact they already spent time with her at their father's apartment in the episode "Christmas".
Rerun is actually seen without his beret at the beginning of the episode.
Dee can be noticed laughing after delivering some of her lines.
When Mabel yells at Dee after he yells at her, you can see Roger laughing.
The soda shop is called Robert's Place in this episode. It's Rob's Place in all the rest of the episodes.
In the scene at Rob's Place, where Shirley tastes Dwayne's drink (to see if it's sweet enough), it's an orange soda. Then after she dumps the glass of water on Rerun's head, Dwayne's drink magically switches to cola (and Raj's, which was cola, turns to red soda). After the scene where Dwayne is talking to the girl, the drinks switch back.
This series was based on the movie Cooley High with some changes.