Continuity mistake: Susan is at home, making drinks for Mark and her - she pours them drinks from the blender and leaves a little bit of liquid in the blender. They head for the living room and the blender suddenly has about 3 inches of liquid in 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: When Mark gets up from the snowbank and chases Elizabeth into the ER, his red bag is over his right arm. When the shot changes to show him entering the hospital, his bag is over his left arm - he wouldn't have had time to change it.
Continuity mistake: When Mr. Leonelli is being loaded into the ambulance, someone throws a large bottle of dark liquid that lands on the right side of the back window - however, when the shot changes, the liquid is running down the left side of the window.
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.
Baby Shower - S2-E15
Continuity mistake: At the beginning of the show, Peter is scraping the ice off his windshield, but the scraped pattern we see from inside the car is different from the pattern outside. When the car won't start, he gets out, and more of the windshield has been scraped in the meantime.
Shifting Equilibrium - S15-E20
Continuity mistake: When Dr. Rasgotra puts her name up on the wall of plaques, her arm is up. Camera cuts and it is back down instantly.
Visible crew/equipment: When Dr. DeRaad asks Kerry if she knows Paul Sobriki she tells him to check the board, and as Kerry walks past the door we can see the reflection of a crouched crew member walking backwards, pulling a rolling microphone stand. (00:02:45)
Visible crew/equipment: When Luka and Mark are questioning Amira about the knife Sobriki had used, Kerry walks in then tells Amira to go upstairs to get security to open the personnel office, and the green T-mark taped to the floor is visible near Luka's feet. (00:16:45)
Audio problem: When the team is moving Mr. Metcalf to a different room, Luca says, "Let's go people. Prime the rapid infuser." Abby says, "subclavian on the right." The shot shows the a close up of the patient's face (Mr. Metcalf). Immediately, that 4-second shot with audio repeats itself, before moving on to the next. (00:12:40)
No Good Deed Goes Unpunished - S9-E13
Character mistake: Dr. Corday finishes assessing a gun shot victim, then goes to the next trauma room to assess another. The steady cam follows her. She makes sure not to contaminate her gloves on the door, opening it with her elbows, but then goes straight to touching the next victim. Of course, in real life, she'd change gloves first. The shot never changes, so there's no chance of her changing gloves off camera. (00:12:30)
Continuity mistake: Inside the first 10 minutes, Greene finishes a trauma and his shift and heads upstairs to take Ella from Corday, so she can start her shift. Next, we go back down to the ER, where Benton and Finch are assessing a trauma victim. In the background you see Greene checking an X-ray film, but he has meant to already leave with his baby.
Revealing mistake: As Dr. Benton is leaving the nursery, there are two people who are supposed to be walking down the hall. But, it is very obvious that they are waiting on their mark, waiting for the go ahead before they start walking. (00:38:40)
Try Carter - S11-E3
Revealing mistake: Ray Barnett is shopping down the cereal aisle and a package of brats is thrown into his hand when you can see there is nothing on the shelves other than cereal. (00:39:01)
Other mistake: When Neela puts back on her scrubs after sleeping with Simon, she has no scar on the front of her body. Yet she was opened up in the OR after she was trampled at the rally.
Cañon City - S12-E1
Continuity mistake: Sam and Luka are driving to Colorado, presumably in a hurry, to try to find her missing son, Alex. While their driving in the daytime, you can notice inconsistencies in the traffic and road. They are driving on the interstate, but getting passed up by semi trucks. The trucks are not slowly passing them either. It's almost as if they are stopped and the trucks are whirring past them. Then in one shot you see a car change to the left and start to pass, but when the camera angle changes, you see Sam passing up a semi truck at a high rate of speed. A moment later, as their still chatting, an exterior shot of the car shows them changing to the left lane to pass a truck, however the lines in the road are yellow, meaning they are not on the interstate anymore.
Revealing mistake: Neela is delivering a baby. As the camera moves around a nurse to show a close up of Neela and the baby, you see her holding the "head" about a foot away from the mom and quickly moves it closer to look like it's coming out of the woman.
Continuity mistake: Chuny tells Abby that Weaver is looking for her because she didn't call Child Services for a patient. Abby then goes to a phone to call. While she's on the call she hands Malik some sporting event tickets. The next scene shows Weaver out on a date when she bumps into Malik and Susan on their way to the sporting event. The very next scene is back in the ER where Abby is telling Carter that Lewis (Susan) just discharged a patient. The scenes don't line up, as they give the impression that Weaver, Malik and Lewis are all on shift at the hospital, when they're out on the town at the same time.
Homeless for the Holidays - S3-E10
Character mistake: When Doug leaves work, he tells Carol he is Going Home to watch the channel 11 Yule log. Later on, he shows up at her house with Charlie and Carol says, "I thought you were watching the channel 9 Yule log." It's possibly a slip of the tongue from Carol, but most likely it would be ingrained in their heads which local channel features a Yule log at Christmas.
Answer: Take care of your dad.