Brandon Tartikoff mentions that he could make a TV show about a high school principal and his kids. He could have been talking about Saved by the Bell or its long-running spinoff, Saved by the Bell: The New Class, which featured Mr. Belding as the main character and a whole bunch of new classmates.
The commercial is being filmed for NBC which is the network that Saved by the Bell originally aired on.
When the last act starts, watch closely when Slater enters the radio broadcasting room that Jessie is in. She turns off the broadcast and a light outside and above the doorway goes off, indicating there isn't any broadcasting going on. Thus, people can enter the room. Nice attention to detail EXCEPT... the door is OPEN the entire time, as evidenced by Slater's casual striding into the room.
Zack and Kelly break up for the second time. The two only got back together the previous episode but end it when they both realize that neither of them wants to be in a exclusive relationship.
When Screech is hitting on the girl on the treadmill next to him, his treadmill is only moving at a walking pace. When the girl rejects him and presses the button to speed up his treadmill, it doesn't speed up, but Screech acts as if he's running to keep up, but is only jogging in place.
In addition to Mrs. Billingham offering Slater a football scholarship to go to Stansbury, he mentions he was going to be offered a car to go to Stansbury as well. Someone should tell Mrs. Billingham that bribes like a new car are in violation of NCAA rules.
Heather, then Kelly, then Heather's boyfriend Robert knock on Zack's bedroom door. It'd make more sense for Zack to greet them at the entrance to the house.
During the scene in Belding's office, watch Zack as he tries hard not to laugh at James.
Slater is offered an athletic scholarship to Stansbury for football. However, wouldn't it have made more sense for the scholarship to have been for wrestling? While it was mentioned once or twice that Slater played football, wrestling was the sport most commonly mentioned for Slater. In fact it was one of the rare consistencies on the show!
The name of the mall that the gang was in this episode is also "Bayside" as that's the name of their high school.
After Lisa wins Brian at the auction, she hands a credit card to the cashier. Lisa then walks off without her card, which the cashier simply drops into the cash box.
The events in this episode are highly unlikely. The most popular guy in school doesnt turn down a girl he's obviously attracted to because he learned a lesson. It was also weird that the principal danced with a student (Kelly) and no one gave it a second thought.
Exactly how well did Wendy know Zack, and what was it that she found so fascinating about him? They never went into it in the series, since it was clearly meant to be a lesson for Zack, but one could argue that Wendy was being just as superficial as Zack was.
It's odd that Eric's right eye got black even though Jessie punched him in the left eye. It would've made more sense if his left eye were black.
Even though Eric decides to stay in Calfornia and Bayside, he's neither seen or heard from again.
Kelly mentions something that her brother did when he was 19. But she has previously said that she is the eldest of her siblings.
At the luau, Slater mentions that Cynthia, the girl he "saved" earlier, would be going to Bayside during the senior year. But nothing is mentioned of her during season 4.
In the episode, Mr. Richter brings an old picture of his daughter, asking to hang it above the dining-room. This picture later became a cross-over moment with California Dreams. The picture has been seen there in numerous episodes, hanging on the wall of the Garrison's kitchen.
When the staff is trying to clear out the first party, Screech enters with an armload of coats belonging to the guests - even though this episode is supposedly set in California during the summer.
At the start of the episode, watch Kelly stumble over a chair as the crew lines up to watch Zack imitate Mr. Carosi.