Maddie's family lives across Fenway Park.
Maddie's last name is Fitzpatrick.
Zack hates cheese, but Cody loves it.
First appearance of the twin's father, Kurt Martin.
London: Your grilled cheeses are ready!
Cody: Next time you might wanna put it on bread!
Zack: And you might wanna remove the plastic!
London: Just because I don't have any money, the bank stops being nice to me?
Mr. Moseby: Shocking, isn't it?
(Zack and Cody are fighting about their baby tape, and who they were)
Carey: I knew I should have erased that tape.
Cody: Anything else you haven't been completely honest with us about, Mommy? If that's your real name?
Carey: Well, I am your mother. Do I have to show you the beginning of the tape again?!
Zack & Cody: No!
Zack: He's been acting like me all day. He came on to all the girls at school, wised off to the teachers, and now he wants to copy off my homework.
Carey: That's terrible.
Zack: I know. It means that I have to do my own homework.
Cody: So, if I'm Zack and I don't like cheese, does that mean you're the one who likes ham?
Zack: No, we both like ham.
Cody: Then who likes Liverwurst?
Zack: No one!
Cody: Then why do they make it?!
When Mr. Moseby is imitating what Maddie did, dancing and singing "My sisters got a groom, I got my own room," you can see Dylan and Cole Sprouse, Zack and Cody, trying not to laugh in the background.
There is no hot chocolate in the cup Estaban gave London.