Continuity: 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: In series 6, episode 1 ('My Mirror Image'), the length of Dr Cox's hair fluctuates noticeably between scenes.

Continuity: 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.

Revealing: 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: 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.

Continuity: 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: 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: 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: Episode 6-17 - Their Story. When Turk is talking to someone about the teenager getting breast implants, the first shot (as he says "I'm sorry but that mum should not be giving that girl."), 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 the Todd.