Continuity: In episode 1.10 "Cody Goes to Camp", when London and Mr. Moseby crash through the wall with a car, there's a white betong-block on top of the car, but a few shots later, it's turned itself around a little bit more to the middle.

Deliberate "mistake": The top of the Tipton Hotel is animated. You can tell because in the opening of any episode showing the top of the hotel, there should be 3 visible peaks. You can see 2 peaks and if you look where the middle peak should be, you can see through the top of the hotel to the sky on the other side.

Visible crew/equipment: Episode 1x12 - "It's a Mad, Mad, Mad Hotel": When Arwin tells about his super strange glue, there's a studio light reflected in his glasses.

Visible crew/equipment: Episode 1x09 "Band in Boston", at the beginning, you can see studio lights reflected on Zack's guitar during the song "Schools Out".

Continuity: In the episode "Maddie Checks In," when Zack and Cody's mom sing the song, right before Cody comes in, Maddie has an orange dress on and not the pink one she wore before. But in the next shot she has on the pink one again.

Revealing: In the episode "The Ghost Of 613", when Mr. Moesby has the flashback and he goes into the haunted room, the mirror is broken when he walks by it before the ghost throws the vase at it to "break it".

Revealing: In episode 1.08 "A prom story", when the mime leans on Mr. Moseby, Moseby goes away and the mime is leaning on nothing - but you can see a string that he's hanging on.

Visible crew/equipment: Episode 1x09 "Band in Boston", when Cody tells his mother how much he hated Zack, you can see the reflection of a studio light on the chair he is sitting on.

Continuity: At the beginning of the episode 1x05 "Grounded on the 23rd floor", Zack and Cody skate in the lobby and push a guy with a golf bag. It falls and spills the golf clubs onto the floor. A big guy trips on it and falls over Mr. Moseby, and after that the golf bag is not to seen.

Continuity: In episode 1x04 "Hotel Inspector," Zack and Cody's mom takes away the rats to Zack and Cody's bedroom. She goes behind the sofa, but in the next shot of the door, she's not to be seen anymore.

Continuity: In the episode "Hotel Hangout," when the kids are at the pool, Cody/Zack has a red drink in his hand, but a few shot later it's gone.

Visible crew/equipment: In the episode "Hotel Inspector", when the man with glasses comes in, you can see light on his glasses that looks like a studio light.

Continuity: In the episode 1x05 "Grounded on the 23rd floor", Zack and Cody give all the candy for a camera. They put it all on the table, but when they get the camera, all the candy is gone.

Continuity: In the episode "Commerical Break," they start to film the commerical for the first time without London and with Mr. Mosby. London gets upset and sits down on a couch where they are shooting the commerical. She and the couch leave the shot for a second, and London is gone when they show the couch again.

Revealing: The flags on Tipton hotel you see almost every episode never move; they're animated.

Visible crew/equipment: In the episode 1.09 "Band in Boston", Arwin comes in with his "Saxoblower." He puts on sunglasses and you can easily see studio lights reflected in them.

Visible crew/equipment: In the episode "Hotel Inspector," when London comes to tell Maddie about something, she says, "Dogs playing poker," and you can see studio lights on her sunglasses.

Continuity: 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.

Visible crew/equipment: Episode 1x06 "The Prince and the Plunger", Zack and Cody go to Arwin the first time and get donuts, but when Arwin says it's going to be a steak next time you can see the studio lights reflected in his glasses.

Continuity: In episode 1x09 "Band in Boston", Zack puts Cody's whistle in their mate's pudding, but when Cody says "You got pudding on my whistle" and the mate says, "And you got whistle on my pudding," the whistle has disappeared.