Continuity mistake: In "Boston Holiday", Zack is talking to Mr. Moseby in the hallway. In a wide shot, behind Zack, you can see that the elevator door is closed. But when it cuts to a close-up, the door is suddenly open. There wasn't enough time between shots for the door to open.
The Suite Life of Zack and Cody (2005)
1 mistake in Boston Holiday - chronological order
Starring: Ashley Tisdale, Brenda Song, Cole Sprouse, Dylan Sprouse
Odd Couples - S2-E1
Cody: [Holds up chocolate pudding.] I found your pudding.
Zack: Oh, thanks. But I could've sworn it was vanilla when I lost it.
More trivia for The Suite Life of Zack and Cody
Question: What Happened to Muriel? Around season two she disappeared.
Answer: Keep in mind, Muriel wasn't very popular. So the writers/directors must have thought it'd be a good idea to let go of the character. No one seems to be complaining.