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

Visible crew/equipment: At the beginning of the episode 1x05 "Grounded on the 23rd Floor", when we hear the classic song, if you look closely at the door windows, you can see a studio light.

Revealing: Episode: 2.42 "Going for the Gold". When Arwin fixes the elevator on the top floor, the same stage is used: Notice the stairs in the lobby with the same plant.

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.

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.

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: 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: 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.

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".

Visible crew/equipment: Episode 1x09 "Band in Boston", the reflection of studio lights are visible on the drums almost every time they are seen during this episode.

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: 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.

Visible crew/equipment: In the episode 1:05 "Grounded on the 23rd Floor", when Maddie gives Zack and Cody the "US People" magazine, you can see studio light on it.

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 1:05 "Grounded on the 23rd Floor", when Cody falls from the porthole, two glasses are on the floor, but later when they run after the papparazi, the glasses are gone.

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.

Visible crew/equipment: At the beginning of the episode 1x05 "Grounded on the 23rd floor" after the big guy falls over Mr. Moseby and everybody looks at them, look Zack and Cody's helmets: you can see 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 1x05 "Grounded on the 23rd floor", Zack takes of his clothes and has a suit underneath. The clothes are lying on the floor of the bathroom, but later when the bathtub overflows onto the floor, the clothes have disappeared.

Visible crew/equipment: At the beginning of the episode 1:05 "Grounded on the 23rd Floor", when the big guy is falling over Mr. Moseby, you can see studio lights in his eyes when he yells "mamma".