My Student - S1-E17
Continuity mistake: When Elliot and doctor Kelso are in the closet, Elliot's hair keeps changing between shots.
Continuity mistake: When J.D. and Eliot go bungee jumping, they go past a large pipe, or something on the way down but, when they bounce back up, it's gone.
Deliberate mistake: When the janitor pulls the plug on the phone, there would actually be nothing but dead air because the janitor just pulls the plug on the handset, not the whole phone. So they added a dial tone for comedic value. (00:22:20)
Continuity mistake: When Turk has his hand up in the operating room, it varies between having blood on it and not between shots.
My New Game - S4-E3
Continuity mistake: When JD and Turk are trying their latex suits Turk has a black scarf around his neck. Then JD says "You're mad because I make more money than you.", Turk turns around and the scarf is gone.
Continuity mistake: During the scene where the class is being warned about the dangers of being a "wait and see" type of doctor, JD imagines himself as being the only person in the auditorium. In the first shot of him alone, there is a bookbag (or something similar) sitting on a seat about three seats to JD's left. In the next shot of him, it is gone, and in the third and final shot of him alone, it is back again.
Continuity mistake: Laverne's clipboard changes from being held out in one shot to held close to her in another while talking to Dr. Kelso. (00:04:15)
My Unicorn - S4-E11
Continuity mistake: When Murray is flying the plane towards JD, JD is stood on a dirt surface with a road and his scooter behind him. When JD starts running from the plane, he is in the middle of a grassy area, with no road or scooter behind him.
My Old Lady - S1-E4
Continuity mistake: When JD is at the birthday party, watch the chocolate on his face. At one point there are two separate bits of chocolate on his left cheek, then the shot changes and they are gone. The shot changes again and they are back.
Continuity mistake: When Dr. Cox is examining Ben, he has his hands on his face. The shot cuts to another angle and Dr. Cox's hands are by his side.
Continuity mistake: A patient in a red dressing gown is walking around the background when JD is teasing Eliott. He is seen twice but wouldn't have been in the second shot with the direction he was walking and in the time taken for the shot.
Continuity mistake: When Carla, JD, Turk and Elliot are in the canteen, JD's drink changes with Elliot's by the end of the scene.
Continuity mistake: When Sean says he doesn't see J.D. as a threat his right hand is gripping the handle of his coffee cup. But when he takes a drink he's gripping the whole cup. Not the handle. (00:19:40)
My Old Lady - S1-E4
Revealing mistake: Just before all the bricks fall on JD and it's a surprise, you can see him flinch before they hit him.
My Overkill - S2-E1
Visible crew/equipment: When JD is thinking to himself while the characters are 'drifting through the halls', you can see the rope and trolley device that is being used to pull Carla along.
Continuity mistake: When JD is giving Ben the bad news of his diagnosis, Ben's arm can be seen held down by his knee in one shot, and in the next it is instantly behind his head.
Audio problem: When Bri-Bri says this hospital is hot his mouth moves before the words come out. (00:08:30)
Continuity mistake: Elliot's "Naked" drink changes directions a few times without her touching it while talking to J.D. (00:16:10)
Continuity mistake: When Turk is holding the chili-dog, it changes from one handed to two handed and back between shots.
Continuity mistake: When Elliot is looking at her patient, you see her reflection in the glass and her stethoscope goes down the SIDE of her ID badge clip, when it cuts to showing her through the glass it's now OVER the clip.
Answer: No, it was a fake, they used a stamp.
It is real.