Angels We Have Heard on High - S6-E15
Other mistake: In the scene at the Peach Pit where Rush tells Steve that he is his biological father, he shows Steve a copy of the birth certificate. Under adoptive parents, it lists Sanders, Rush and Sanders, Iris. Only Iris isn't Steve's adoptive mother, Samantha is. Iris is Dylan's mother who lives in Hawaii.
Continuity mistake: When they are watching Colin's car chase at television, Colin is wearing an orange shirt. But Colin was wearing a grey shirt before the car chase started, and he is also wearing a grey shirt when he is caught.
Lover's Leap - S6-E5
Visible crew/equipment: When Brandon is talking to Val in the kitchen, right after he says, "She had her moments," you can see a boom mic above Val's head.
Continuity mistake: When Colin and Kelly celebrate his selling some of his artwork, the head in his glass of champagne disappears and then reappears.
Answer: The students were told by the faculty that anyone found to be intoxicated at the Senior Prom would not be allowed to participate in graduation activities. Donna had a little too much champagne at Mel's house and in the limo and got drunk. At the Prom she spent most of the time in the bathroom, being sick. As the gang tried to discreetly usher her to the car, Donna fell and Mrs. Teasly questioned her and realized that she was drunk. "Donna Martin graduates" is what her classmates chanted after a walk-out on their final exams, in protest to the fact that the board was meeting inside to make the final decision of Donna's fate. Big surprise: Donna Martin graduated.
elleemann