Continuity: 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.

Continuity: 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.

Continuity: In the intro, JD comes running back into the shot after trying to change out of the same exact outfit Dr Cox is wearing. JD has the "Baby Gap" TShirt stuck & wrapped around his head turban style. The shot switches to over his shoulder and the shirt is now loose, like a towel wrapped around his head.

Continuity: When J.D. walks up to the table where his interns are sitting, Keith and Rex are fighting with their table knives and have them crossed. The shot switches to a view from the other end of the table and suddenly Rex's knife is on the table and he is facing J.D. but Keith's knife is up in the air as if he was still fighting with Rex. There is not enough time for Rex to put his knife down and turn to face J.D.

Continuity: Season 5 - Episode 3. After Turk has operated on the patient without anesthetics and Dr. Cox says they can publish it in Almost Magazines, the clock on the wall to the right of the screen shows 11:05. When it cuts the clock shows 5:40.

Continuity: 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: Season 5-6, Episode: My Missed Perception. As Kelso goes rolling by in the hall with the wheels on his shoes, you can see they are actually skates and the wheels are black. When he asks who put the tiny wheels on his shoes, the shoes are now normal and the wheels are white.

Factual error: Early in the episode, Keith pages JD from home to the hospital. When JD arrives, he asks Keith what's the big emergency and Keith asks if he wants the patient to be prescribed unfractionated or low molecular weight heparin. JD gets angry and says that they're the exact same thing. This is in fact completely incorrect. Low molecular weight heparin is made from fragments of unfractionated heparin. They have different effects in their metabolism, half life and dose monitoring (unfractionated needs a blood test, low molecular weight doesn't). The choice between unfractionated and LMWH is an important clinical decision and should not be dismissed as "the exact same thing".

Revealing: 5-07 - Doug clobbers JD with the fire extinguisher when he's in the body bag. When JD asks him why and Doug explains with the fire extinguisher in his hands, you can see him flexing it and that it's made out of rubber.

Continuity: Season 5-9, Episode: My Half-Acre. After J.D.and Julie take their picture with the old people masks and have taken them off, there are a lot of pieces from the mask still on their face. When J.D. has finished his small speech you can most of the bits from both of their faces has disappeared, with J.D's more noticeable than Julie's.

Continuity: Season 5-12, Episode: My Cabbage. Whilst J.D. and Carla are visiting Mrs Wilks near the start she has a tray of food and a bit of paper next to the tray in front of her. In shots of J.D. and Carla the table in front of Mrs Wilks where the food was is completely clear and the food and paper keep reappearing between shots.

Continuity: Season 5-12 "My Cabbage": When Cox is explaining about the importancce of his "Clicky-top pen," he clicks it several times with his index finger. When the shot changes to over his shoulder, he is now clicking it with his thumb.

Continuity: Season 5-19, Episode: His Story III. While Carla and Turk are lying in bed at the start both of them keep changing positions between shots. Turk's left arm and hand also keep changing position between shots.

Factual error: Season 5 - Episode 18 - My Lunch: The donor recipients all crash dramatically after the doctors discover the donor which all the organs came from had rabies. However rabies has a long incubation period, patients take days to die involving seizures and frothing at the mouth before complete organ failure takes place. The deaths of these 3 patients was not the kind of death caused by rabies.

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.

Factual error: In season 5, My Transition, Kim mentions that on her 1st ever 1st date, she sat in the back seat of her boyfriend's Miata, but that car is a 2 seater - there is no back seat.

Continuity: Season 5-24, Episode: My Transition (1). The first time we see J.D. and the flyer about his deck, the flyer has a picture of J.D. looking straight ahead smiling and the writing on it reads "Old? Gay? Like Decks?" After J.D. rips the flyer off and shows it to the janitor, the picture of J.D. has changed to him giving a thumbs up and the writing has also changed to "Come and Chill at my big gay deck."