Continuity mistake: Dr. Cox's hair colour and length change back and forth significantly during the episode.
Their Story - S6-E17
Continuity mistake: When Turk is talking to someone about the teenager getting breast implants, in the first shot you can see he is talking to someone in a a blue shirt with a stethoscope - i.e. JD. However after this shot, JD has vanished and the conversation is suddenly with Todd.
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.
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.
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.
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.
Continuity mistake: S6-E01. When Perry is lecturing the interns, the sweat stains on his shirt change between shots. For example, when we first see him there is no sweat around the collar, but in close-ups there is sweat around the collar.
Continuity mistake: In series 6, episode 1 ('My Mirror Image'), the length of Dr Cox's hair fluctuates noticeably between scenes.
My Best Friend's Baby's Baby and My Baby's Baby - S6-E2
Continuity mistake: S6-E02. When Zach Braff is talking to his girlfriend about whether or not they'll keep their baby, he says something like "I sure do," and is propping up his head with a hand. In the next shot (which continues his line of dialogue) he is suddenly no longer propping up his head.
My Musical - S6-E6
Continuity mistake: Carla and Turk's song and dance, "For The Last Time I'm Dominican", was filmed a couple of months later than the rest of the episode because actress Judy Reyes, who plays Carla, was recovering from a broken hip at the original time of shooting. Stephanie D'Abruzzo, who played the patient, was brought back in to film the scene; her hair is noticeably longer during the "Dominican" song than during the rest of the episode.
My Best Friend's Baby's Baby and My Baby's Baby - S6-E2
Continuity mistake: When Jack asks Perry what is on the screen, Perry's arm moves from the back of the sofa to his lap in an instant cut.
Continuity mistake: When JD gets hit by the blue paint and confetti by the Blue Man Group at their concert, most confetti in the next scene disappears and JD is almost covered only by paint.
His Story IV - S6-E7
Visible crew/equipment: When Slagathor is watching Laverne, Dr Cox and Elliot and Turk argue amongst themselves, you can see just under Slagathor's feet the tape she is standing on to tell her where to stand during filming. (00:11:20)
My Best Friend's Baby's Baby and My Baby's Baby - S6-E2
Continuity mistake: When Turk goes into the room with the camcorder on the tripod, the viewer is already open from the front. However when it goes into the back shot of Turk to show Carla, the viewer is shut again. Then it goes to the front view of Turk and the camcorder, it's open again without anyone touching it.
Continuity mistake: Near the end, when Elliot, Carla and Jordan are in the bar, the waitress brings them three drinks; two short, clear ones and a cosmopolitan with a lime. A few shots later, Carla is seen from the front drinking the cosmo. The next shot from behind her shows the drink instantly on the table. The drink switches instantly between her hand and the table several times in the following shots.
Revealing mistake: Right after Dr. Cox gives the results of the patients STD tests, the shot switches to show Turk, JD, the Todd and Dr. Kelso. Before the sprinkler activates you can tell that their hair is already wet from previous takes.
My Musical - S6-E6
Continuity mistake: The EMT on the right of the screen has his hand on his hip, then on the trolley in an instant cut.
Factual error: When Lloyd is driving Jack back and listening to speed metal, his gear stick is in park.
Continuity mistake: When the janitor falls out of the moving van (having just woken up and not realising it was moving), we see him hit the ground and roll a number of times. By the end of the shot, his head is almost touching the roadside fence. However, when the shot changes to get a close-up on his face, he is some distance away from the fence.
Other mistake: When Elliot sits down next to imaginary Laverne, Carla must have imagined her brushing against her sleeve on her blouse.
Answer: Dan was drinking beer and Cox feared that Dan might get so intoxicated he would fall asleep and drown in the tub.
Mortug