Continuity mistake: While Dr. Cox is explaining to JD why he allowed the patient to worsen, the remaining "man" card in the pocket of JD's scrubs raises and lowers between shots.
My Boss's Free Haircut - S4-E20
Other mistake: When Bob is trying to get into the patients room, he uses a screwdriver to break in. The door opens into the room with the hinges on the inside, theres no way he could get at them and the door frame is intact as shown when the door falls in.
My Way or the Highway - S1-E20
Continuity mistake: When JD and Cox are talking outside the staff room, just as Laverne walks past, the magazine Cox is holding switches from being held under his right arm to his left in an instant.
Continuity mistake: When JD suggests that Dr Cox turns to Elliot for help, the metal file that Dr Cox is holding turns around between shots. In some shots we see the plain, smooth side - in others, the ridged side with a label.
Continuity mistake: Turk times Carla's pregnancy test by putting some mini snacks in the microwave. Then, just afterwards, they're all neatly stacked next to him even though neither of them went near the microwave.
My New Game - S4-E3
Continuity mistake: Right near the beginning, Jordan adjusts Cox's stethoscope and collar. The end of the stethoscope then goes back and forth between inside and outside of his coat for the remainder of the scene.
My Nickname - S1-E10
Continuity mistake: When Turk, JD and Carla are talking in the staff room, Turk's brown lunch bag and grey jacket switch from his left to right hand between shots.
My Lucky Day - S2-E9
Continuity mistake: When Carla apologizes to Jordan and Jordan gives her a speech, Jordan has her arms crossed. When it cuts her arms are suddenly down.
Continuity mistake: Season 5 - Episode 3. When JD lies on the ground and Elliot is trying to help him up, the paper cups lying around JD's head change position between the shots.
Continuity mistake: When Elliot and her dad is at the bar and he says "It's a hell hole" his glass is on the table. When it cuts he suddenly has it in his hands.
My Hero (2) - S1-E23
Continuity mistake: When Ben is spinning JD round on his shoulder, from a long cut he is spinning JD backwards, but in the closeup JD is spinning with his head facing forward.
Continuity mistake: When Kelso flies off the tread mill, banging into the wall and making the book shelf fall on his head, the books falling to the floor change position in the next shot.
Visible crew/equipment: When Todd says "Why won't any women talk with me?" it cuts to a girl saying "Because you're slimy." You should be able to see the boom mike coming into frame above the clock on the wall.
Plot hole: In the season 5 episode "My Fallen Idol", it is a key plot point that Turk has a hard time hugging guys. However in the Season 3 episode "My American Girl" Turk openly gives another surgeon a hug after J.D. makes fun of him. It is not possible for him to have changed because it shows that even before they became doctors, Turk would not hug J.D.
Visible crew/equipment: When Elliot is talking to the patient you can see the boom mic through the reflection of the window next to patient's forehead. (00:14:35)
My Fishbowl - S6-E12
Continuity mistake: In episode 6-12 "My Fishbowl," the janitor waits outside a door holding a fishbowl. The door opens into the room as seen several times. You can even see that the hinges are set up to open in. When the janitor sets the fish bowl down you can see that the door has changed and opens out into the hall.
Deliberate mistake: In one of the later episodes of season 2 Turk is seen being bored in surgery and checking the patient's wristwatch to see how long they have been operating. Patients are not allowed to wear jewelry or watches during surgery as there is a VERY high risk of infection and it might kill them.
Revealing mistake: The patient Dr. Kelso says is dead is actually breathing while lying there in the bed. (00:06:25)
Visible crew/equipment: You can see the shadow of the camera after Elliot spins around on the close up before Dr. Cox enters. (00:01:05)
Continuity mistake: When Carla and Turk tell JD that he is around them all the time, it cuts to a scene with Carla and Turk in the tub while JD is using the toilet. It cuts back to JD saying "And here I thought that was a lovely evening" while he is holding a bowl of popcorn in his hands. When it cuts the bowl is suddenly on the table.
Answer: Dan was drinking beer and Cox feared that Dan might get so intoxicated he would fall asleep and drown in the tub.
Mortug