Motherhood - S1-E25
Continuity mistake: Near the start of the show, Susan rushes into the ER with Chloe who is in labour. Carter is sitting behind the desk and he tips back, falls over, and takes his coffee down with him. Then he is suddenly standing there with a wheelchair for Chloe and he also hands Susan a mug of coffee from the counter, which somehow just appeared there. All this took place in 6 seconds, which couldn't have happened in real time.
Everything Old Is New Again - S1-E26
Continuity mistake: When people start to dance at the reception, there is a shot of Susan, Doug and Mark. Then the sax player approaches Susan and asks her to dance so she leaves and hits the dance floor with him. They show them dancing, then a few seconds later go back to the people standing by the table and Susan is next to Doug again. (00:42:00)
Do One, Teach One, Kill One - S2-E3
Continuity mistake: Near the beginning of the show, Susan is talking to Kerry while holding baby Susie and a stuffed Sylvester the cat; the toy is in a different position in each shot and in the last shot it has disappeared altogether. As Susan walks away, the toy is in the diaper bag, although we never saw her put it there.
Do One, Teach One, Kill One - S2-E3
Continuity mistake: As Susan walks along the fence, shouting at Chloe, baby Susie is completely wrapped up in a blanket, although in the shot before one arm was free and Susan never tucked it in.
Do One, Teach One, Kill One - S2-E3
Continuity mistake: Near the end of the show, Susan is holding baby Susie and talking to Chloe through the chain-link fence. In one shot we see the back of Susan and Susie's head, but as the shot switches to Susan's face, we see the back of the baby's head again, without her ever turning her head.
Do One, Teach One, Kill One - S2-E3
Continuity mistake: As Chloe moves backward away from the fence while talking to Susan, we can see her friend Ruth in the convertible, sitting up on the back of the seat. In one shot Ruth completely disappears but reappears again, all in the course of a few seconds.
Continuity mistake: In this episode Susan is thinking about giving little Susie up for adoption, throughout the episode the baby playing little Susie switches from a brown eyed baby to a blue eyed baby.
Continuity mistake: The head of pediatrics is talking about Doug to Mark and Dr. Morgenstern and is holding his glasses in one hand. From one shot to another they flip right over in his hand, with no time for him to change them.
Continuity mistake: Carol's notary asks her for some water and she takes the cup in one hand and the jug in the other and pours. The next shot shows one hand still pouring and the other up on her papers. She had no time to put the cup down and move her hand.
Continuity mistake: Carol is signing papers for the notary and he is complaining about his job - he has one hand up on his large book and the other in his lap. The shot changes and his arm and hand are under the book, with no time to shift naturally.
Continuity mistake: Harper is talking to Mark about her night with Doug and her stethoscope is hidden in her collar and lapel on her right. As the shot changes and she turns, it is suddenly fully visible and the left side has moved much further up towards her neck.
Continuity mistake: Molly's mother walks away from her daughter's bed and towards her ex-husband and has moved about a foot from the bed; the next shot goes back to Molly's face and we can see her mother's hand still on her shoulder, even though this would be physically impossible.
Continuity mistake: When the little boy pounds on Doug's car window, the light outside goes from twilight to dark to twilight again, all in a few seconds.
Continuity mistake: While Doug is giving CPR to the kid that was stuck it is pouring rain and everyone is soaking wet. When he runs with the kid and cop to the ambulance, it is no longer raining and they are all dry.
Continuity mistake: Peter is standing next to the bed of a the little girl who was hit by a car, talking to her parents. Suddenly there is a paper in his hand which hadn't been there in the shots before.
Continuity mistake: Early in the show, Mark is going into an office to meet with Morgenstern and another doctor. As he opens the door in the hall, his bag is slung over his right shoulder, but when the shot changes and he's entering the office, it's over his left shoulder. He had no time to change it.
Continuity mistake: When Mark is having breakfast with Rachel and they are talking about skating, her table napkin, which was under her left elbow, falls to the floor. However, the next shot shows it back on the table, with her knife on top of it.
It's Not Easy Being Greene - S2-E13
Continuity mistake: Carter goes into the faculty dining room to talk to Peter and Dr. Vuselich - he has a brown strap around his neck (with his stethoscope) which changes position several times during the scene, even though he never touches it.
It's Not Easy Being Greene - S2-E13
Continuity mistake: Harper and Carter are in bed and his hand is bunched under the bedspread several inches from her hand. The next shot shows his hand is up by hers, touching her bottle of water, with no time for natural movement.
Continuity mistake: Carter makes an upward motion and grabs Angel's paper cup of booze from her - but in the next shot there is no sign of the cup and he is holding a clipboard. There was no time for him to get rid of it.
Answer: It was in "Chaos Theory", the first episode of season 9 (time code 00:13:55).
Super Grover ★