Continuity mistake: The second time that Turk and Elliot are studying in the apartment, papers appear on the table in front of Elliot from nowhere.
Continuity mistake: When JD and Cox are out having a drink and JD is about to leave and says "Look, Dr. Cox. Don't get me wrong. I love getting drunk in my jammies", there is no glass anywhere near Cox. When it cuts Cox suddenly raises a glass to his mouth.
My Way or the Highway - S1-E20
Continuity mistake: When Dr Cox is trying to tell the nurses how to make coffee, between shots Laverne's purple shirt goes from wide open to mostly closed, and her stethoscope moves.
My Day Off - S1-E9
Continuity mistake: At the end when they are in the bar, Dr Cox asks for 5 shot glasses, the camera cuts to JD and then back to Dr Cox. The glasses have been filled, but not enough time has passed for all 5 to have been done.
Continuity mistake: The letter that JD drops on to Turk's tummy changes angle between shots.
My Last Day - S1-E24
Continuity mistake: Right at the end, when Dr. Cox turns to face JD there is a cup next to his right elbow, the shot cuts to further away, he gets up and storms off and the cup is no longer there.
Continuity mistake: When the janitor is speaking into the stethoscope, his right elbow is on his knee and his left hand is on the mattress, when it cuts closer, his elbow is further up and his hand is next to his leg.
Continuity mistake: In the shot-reverse-shot between J.D. and Elliot at the end of this episode when they finally kiss, J.D.'s nose is on the left side of Elliot's face, and in the subsequent reverse shot it's on the opposite side. (00:20:00)
My Hero (2) - S1-E23
Continuity mistake: In the scene where Ben has several Polaroid photographs scattered on top of his bed sheets, the position of the photos changes between long shots and close ups.
My Hero (2) - S1-E23
Continuity mistake: When Carla and Elliot are in the cafeteria, just after Doug sits down at their table, the top from Elliot's bottle of water moves across the table.
My Way or the Highway - S1-E20
Continuity mistake: In the first scene when JD is playing with the pin art, you can see that his eye sockets have made an impression in the pins. Cut to the close up, and the eye area is completely flat.
Continuity mistake: When Elliot is crying to get her own way, her hair changes from hanging loose to tucked behind one ear, and back again.
My Last Day - S1-E24
Continuity mistake: When Jordan approaches the table, Elliot is seeping her tea bag. But when it cuts to Jordan her hands are around her cup with no tea bag in sight. (00:20:20)
My Day Off - S1-E9
Continuity mistake: When Dr Cox is talking to his old mentor after his infection, the oxygen tube in his nose appears out of nowhere after he says "I'm feeling great, Bob."
Continuity mistake: When Kelso gives Cox the rounds and Cox is surprised, he starts spanking himself with the clipboard. Notice the two women about to walk past Cox. One is in a red top, one in pink. The next shot they are passing the doors, which is well ahead of Cox. The following shot they are about to pass Cox again.
Continuity mistake: If you watch when Alex slips on the wet floor, you can see the woman from behind has longish hair, extending past her shoulders. In subsequent episodes we see Alex's hair is much shorter than the one that falls in this episode.
Answer: Dan was drinking beer and Cox feared that Dan might get so intoxicated he would fall asleep and drown in the tub.
Mortug