Continuity mistake: 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.
My Old Friend's New Friend - S4-E1
Continuity mistake: At the end, after Carla and Turk drive off in their new car, JD is on his scooter and there isn't a chain attached to its rear. But when he drives off there is.
Continuity mistake: When JD jumps out of the bed in the ambulance, half the sheet is hanging on his left shoulder. Then it disappears from his shoulder and suddenly appears again.
Continuity mistake: When Eliott is lying on the couch talking to JD way her stethoscope changes position between shots.
My Two Dads - S1-E5
Revealing mistake: The third time Elliott exposes herself to a patient (this time to the dead one that Dr. Cox is about to pronounce), you can see quite plainly that she doesn't raise her scrub top enough to reveal her breasts. In fact, the shot is wide enough that if she had, her breasts would have been fully visible on camera.
Continuity mistake: While Dr. Cox is talking to Dr. Reid about drug addicts, his finger is in the air, there is a cut from in front to the back and his wrist band changes position in what is an instant cut.
Continuity mistake: When Elliot is unpacking her books at the apartment, she places a brown book on top of the pile next to her. In the next shot, there is a green book on top of the pile.
My Bed Banter & Beyond - S1-E15
Continuity mistake: When Todd is listening at the closet door, and Laverne walks past, Laverne's stethoscope goes between shots from lying flat down by her neck to draped over to the right side.
My Choosiest Choice of All - S3-E19
Continuity mistake: As Kelso is walking out the door with the blue paint on his face, one hand is on the push bar for the door and the other hand is down. Cut to the shot of him walking out the door and now his right hand is pushing the door open and his left hand is just coming down from pulling the alarm wire above the door loose with no time for him to have changed positions.
Revealing mistake: Watch the line appear on the wall as Kelso cuts through the wall into the "Luxury Suite." The line is being cut with a round, drywall cutting bit such as would be used with a drill or Dremel tool. You can see it spinning as the cut is made. However, when Kelso has pushed down the wall and points the tool at Cox and the Janitor, he is now holding a standard reciprocating saw with a flat blade which would cut very differently than what was shown.
My Old Lady - S1-E4
Continuity mistake: The heart monitor lines change a few times, from being close to the neck going straight back, to going around the right side of the pillow. (01:25:50 - 01:26:50)
Character mistake: 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.
My Old Man - S1-E19
Visible crew/equipment: Right at the beginning of the episode, when J.D. walks along and then stops in front of the desk, you can see the green tape marker on the floor which he stops at. (00:00:05)
Continuity mistake: While 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 mistake: When Cox puts on his yellow jacket and pulls the hood over his head he zips the jacket halfway up. Two shots later it is zipped all the way up. We never saw him doing that.
Continuity mistake: When Turk marks the location for the surgery on Pvt. Dancer, he makes a horizontal mark on the left side of Dancer's abdomen. You can also see a small scar on Dancer's right side opposite the mark. A couple of shots later, Dancer is shown from the front and the mark has now switched to the right side above the scar.
Continuity mistake: When Dr Cox is with Eliott and Turk, his stethoscope changes from under his coat to over it between shots.
Continuity mistake: When JD is trying to make a point to Turk about Turk hitting him much lately, Turk raises his fist about to hit but stops and we see his hand is closed. It cuts and his hand is open, and cuts back to being closed.
My Way or the Highway - S1-E20
Continuity mistake: The amount of bites out of Elliot's powdered doughnut changes back and forth between shots.
My Bed Banter & Beyond - S1-E15
Continuity mistake: When JD tells Carla and Turk that he and Elliot had sex in the kitchen, Elliot is shocked and says "How could you possibly think it's an appropriate conversation for work?". It cuts to JD lifting his hand up and about to answer when it cuts, but now his hand is down.
Answer: No, it was a fake, they used a stamp.
It is real.