Continuity mistake: My Lips Are Sealed Episode Number 89 Series number 4 When JD is brushing his teeth and then finds out that his brother is in the bathtub the amount of foam around his mouth changes.
My Old Friend's New Friend - S4-E1
Continuity mistake: When JD writes 'Al Coholic' on the shifts board and the shot then cuts to Elliot, there is a brief cut back to JD and you can see behind him that his prank name has changed to 'Dr. Ass Face'.
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.
My Old Friend's New Friend - S4-E1
Visible crew/equipment: When JD and the Janitor are having a conversation outside the hospital, on the giant X, crew members are reflected in JD's helmet when the camera is facing the Janitor.
My Old Friend's New Friend - S4-E1
Continuity mistake: Right after Elliot asks Molly about the patient, you can see the Janitor standing next to the table behind Molly. But in the close-up shots on Molly, he is gone.
My Old Friend's New Friend - S4-E1
Continuity mistake: In the end, when Carla comes out of the hospital and sees the Mini Cooper, JD's hands changes between shots. In one of the far shots he is holding the handles on his scooter, but in a close-up shot he is holding his helmet.
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 New Game - S4-E3
Continuity mistake: When Dr. Cox gets to Molly and she says "I gave you every opportunity to do the right thing" she covers her mouth with her hands. It cuts to behind her and her hand is down.
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: Just after Dr Elliot Reid says "frick on a stick with a brick", Dr Cox and Dr Reid have a conversation. In between shots Dr Cox's stethoscope seems to change position. Look mainly at the ear piece side and you'll notice it's closer to his neck and sometimes further. Dr Reid's starts off with 1 earpiece behind her name tag and then between shots both earpieces are above her name tag. At the very end of the conversation, they somehow move behind her name tag. (00:15:55 - 00:17:05)
Continuity mistake: When Dr Cox throws JD's TV remote on the table, it lands upside down near to the magazine on the middle of the table. However, the next shot of the table shows the TV remote facing the right way up and near the corner of the table. Also the magazine seems to have moved slightly away from JD's beer. (00:18:20 - 00:18:55)
Revealing mistake: When Dr. Cox is duct-taping Dan to the bathroom wall, you can see that the tape across Dan's forehead is already stuck before Cox sticks it.
Continuity mistake: When The Janitor and Kelso sits at the bench and Kelso gets up and walks away the bench has straps attached to it lifting it up. The straps weren't there earlier.
Revealing mistake: When Dan is in the tub you can see his dark swimsuit in a few shots.
Continuity mistake: When Carla turns down the job offer from Kelso the second time there is a pen lying on the table. In the next shot Carla suddenly has her hand on the pen.
Factual error: In the scene where J.D goes to Elliot's apartment and finds Dan there he sings along to "Thank you" by Dido. However that song is from the album "No Angel". The album cover shown in the episode is "Life for rent" which doesn't feature the song.
Answer: Dan was drinking beer and Cox feared that Dan might get so intoxicated he would fall asleep and drown in the tub.
Mortug