Throwing It All Away - S10-E15
Factual error: In the opening scenes, Arizona mistakenly says a child suffering from imminent liver failure is at risk for psoriasis, when the script called for the word cirrhosis. Psoriasis is a skin disease. Cirrhosis is the medical term for end stage liver disease.
Continuity mistake: When Derek and Richard are in the lift talking, you can see Richard's head bandages under his hat. But when he removes his hat, his head is bare. (00:03:20)
Continuity mistake: When attaching the arms during surgery, they show the same arm with the tattoo "Nicole" pink up twice instead of showing both arms.
Character mistake: When talking to a family, Christina says that the patient had "hematomachrosis" instead of "hemachromatosis"
If Only You Were Lonely - S8-E16
Continuity mistake: When Richard Webber hears the smoke alarm, he is in bed in his pajamas. The next shot shows him in the kitchen putting out the fire in his work clothes.
Continuity mistake: Dr. Warren pulls off his face mask. The camera pans to Dr. Bailey for about a second or two and then back to Dr. Warren, whose mask is back on. After panning away again for a few seconds and back, Dr. Warren's mask has been removed again. (00:11:30)
Deterioration of the Fight or Flight Response - S2-E27
Continuity mistake: When Chief Webber is sitting alone in the dark his watch says 6:30, seconds later Dr. Bailey comes in and tells him that Denny Duquette died at 7:42 that evening. (01:23:40)
Continuity mistake: When Meredith tries to get into the OR to see Cristina, Bailey walks over to the door to stop her, and they talk. But in the final shot of Christina, you can see Bailey's hands on her head, even though Bailey is at the door with Meredith. (00:30:00)
Fear (of the Unknown) - S10-E24
Continuity mistake: In the Yang/Grey scene, Yang is scrubbing and pulls back her mask, seconds later the mask has disappeared. Also her arm has soap on it when Meredith pulls it out, but then suddenly the soap is gone.
Owner of a Lonely Heart - S2-E11
Continuity mistake: When Christina is in the locker room eating a packet of crisps, everyone comes in and she asks them if they have any decent food. In the next shot you can see she is now holding an opened bar of chocolate. Then in the following shot we actually see Meredith hand her a wrapped bar, which Christina then opens (and the previously opened bar is gone, of course.) (00:03:40)
Continuity mistake: Izzie's glasses disappear from her face when the interns are getting the gurney from the airpad. (00:05:25)
The Self Destruct Button - S1-E7
Visible crew/equipment: When they arrive at work near the beginning, as Meredith exits the car, and walks past, the boom mike is reflected in the car, in front of her, following her along. (00:02:45)
The First Cut Is the Deepest - S1-E2
Continuity mistake: When Meredith drops all the files in the elevator to make out with Derek, they are in a different position from when she picks them up.
Continuity mistake: When Meredith is trying to give George the shot of Penicillin the gloves on her hands suddenly appear in one shot. (00:20:00)
Winning a Battle, Losing the War - S1-E3
Continuity mistake: Viper has a green headband on with a white bandage underneath. But as he leaves, then kisses Meredith, the bandage has vanished. (00:10:45)
Continuity mistake: George puts his stethoscope on twice, while everybody is getting ready in the locker room. (00:03:35)
Winning a Battle, Losing the War - S1-E3
Continuity mistake: When Christina is talking to Shelley about allowing her husbands organs to be donored, the girls crayons on the desk keep changing position. (00:27:30)
The First Cut Is the Deepest - S1-E2
Continuity mistake: When Meredith and Derek are at the elevator, Derek is on a palm pilot. Between shots, he closes it twice. (00:41:30)