Obstruction of Justice - S4-E9
Continuity mistake: Just before Carter is let out of his jail cell, he is examining his cellmate's carbuncle - his patient had a cigarette behind his ear throughout the scene but as the shot goes to show the cop arriving, the cigarette has gone.
Continuity mistake: When Doug and Carol are talking in the Pedes ICU, from one angle his head is against the back of the rocking chair, but from the other angle, his head is leaning forward. This continues for the scene, from shot to shot.
Do You See What I See? - S4-E10
Continuity mistake: When Carter enters the hospital with the patient Lenny, he suddenly has latex gloves on, when just a second before, when the scene was outside, he had no gloves on. There just wouldn't have been time for him to get them on.
Do You See What I See? - S4-E10
Continuity mistake: Within the space of what would appear to be more than 5 minutes in the ER, considering the continuous flow of action (starting with Kerry offering to get Pablo a taxi and ending with Dr. West examining the patient Lenny) the clock goes from 10:30 to 6:20. Shortly after that Dr. West pronounces Lenny dead, saying 13:38 (or 1:38).
Continuity mistake: Near the beginning of the show, Doug is examining baby Josh and puts his stethoscope in his ears. Kerry says, "Your actions are totally irresponsible", and the shot goes to Doug. There is no sign of the stethoscope anywhere. The next shot, from behind him, shows it's around his neck. He then takes it off and the next shot should show it in his hands - but it's disappeared again.
Continuity mistake: Carter rushes over to a Coke dispenser where there are four plastic jugs filled with ice and we see him dump all four of them into a plastic tub. The camera goes to Anna, who says "Carter, Carter" and then we see him dump the last two jugs again. When Carter reaches the patient, there is considerably more ice in the tub than he had to begin with.
Continuity mistake: In the OR, Peter is trying to save Dr. Swanson's life. Lizzie is standing in the corner watching. She has her right hand up to her chin, resting the elbow on her left hand, which is at her waist. Subsequent shots show the opposite - her left hand on her right.
Continuity mistake: When the "accident" victims are brought in near near the start of the show, a woman wearing overalls is covered in masses of glistening blood in the closeup - but the wider shot shows less blood and it is much more dried on her clothing.
Obstruction of Justice - S4-E9
Continuity mistake: When Jeanie is in the office with Kerry, Anspaugh, and the union rep discussing her firing, her stethoscope changes position over her name tag several times within a few seconds.
Continuity mistake: Near the start of the show, Peter is holding baby Reese upright when he opens the door to Carla's room, but as the shot changes to show him coming through the door, suddenly the baby is lying horizontally in his arms.
Continuity mistake: When Anna and Max are talking in the lounge, a piece of her hair is hanging over her ear when the shot is from behind her shoulder, but from the front angle, it's tucked smoothly behind her ear.
Continuity mistake: When Carter is doing the eye test on the old woman, between shots he is holding the glass in front of a different eye instantly.
Do You See What I See? - S4-E10
Continuity mistake: Even though Carter and Henry were outside in the snow when the patient Lenny arrived, and they had quite a bit of snow in their hair, when the shot goes to them entering the building, we don't see any snow on Carter and Henry - but there is still lots on the patient and the paramedics.
Continuity mistake: Lizzie sees Dr. Morgenstern for the first time in the ER and she asks Kerry, "Who the hell was that?", and Kerry answers, "Our Chief of Emergency Medicine." Yet when he resigns in Episode 19, he tells Peter he's resigning as Chief of Surgery. Unless he held both positions, Kerry's answer could not be considered a character mistake, as she would have known what his position was.
Do You See What I See? - S4-E10
Continuity mistake: The paramedics bring Lenny by ambulance and are taking him out of the back of it - Carter picks up the chart from the gurney as the paramedic describes the patient - but suddenly the chart is back on the gurney - we should have seen Carter do this but we don't.
Continuity mistake: When Anna leaves the little boy Skyler's room, she has his chart under her right arm - but when she gets through the door and joins Doug in the hall, the chart has transferred to under her left arm, with no time for the change.
Of Past Regret and Future Fear - S4-E20
Continuity mistake: When Carter is trying to get his cousin Chase to draw a picture, sometimes there is a glass of juice on the tray and sometimes there isn't.
Continuity mistake: Near the beginning of the show, Peter is feeding Reese in the hospital cafeteria. Reese has a bowl of pablum that is in the middle of his high chair tray. The next shot shows the bowl way over to the left, even though there was no time for the change in position.
Continuity mistake: Oliver, the brain tumour patient, is talking to Anna, Henry, and Carter. He has his right arm up on the bed railing - but as he says "cook", his arm is suddenly down in his lap.
Continuity mistake: When Doug is sitting at the cafeteria with Mark, Peter and baby Reese, his arm is stretched out on the table as Peter says, "fifteen minutes of quality time". The shot changes and suddenly there is no sign of his arm.
Answer: Take care of your dad.