Continuity mistake: Yoshi and Mark are in the room with ballroom-dancing patient. Yoshi is writing on the chart - when the shot changes the paper on the chart is tented up, with no time for it to change position. When the shot changes again, he has the chart down on the instrument tray, again with no time for the change.
Masquerade - S5-E5
Continuity mistake: Carter suggests Lucy find the drunken patient a detox bed and the pile of books, files and fake arm she is carrying shift position from one shot to the next.
Continuity mistake: Doug introduces his girlfriend's son Jake to old girlfriend Linda who is holding her coat over her arm with her hands clasped together. As she says hello to Jake she puts her hand up to her hair, but from his angle we still see her hands together. This continues for the next couple of shots as they chat.
Of Past Regret and Future Fear - S4-E20
Continuity mistake: As Carter's grandmother is asking him if he'll be at his grandfather's dinner, we see him pick up a mug by its handle - but the next shot, from behind his shoulder, shows him holding the mug by the side.
Make a Wish - S3-E21
Continuity mistake: When Peter goes into Carla's room to talk to her, we see him let go of the door, but in the shot showing him entering the room, he is still holding the door.
Continuity mistake: When Kerry and Doug get to the peds unit he starts listening to the kids heart/lungs with a stethoscope. The camera cuts to Kerry and then back to Doug and he is just taking the stethoscope from around his neck. The camera cuts to Kerry and then back to Doug and its around his neck again. The camera cuts to Kerry.Doug's listening with the stethoscope again.
Continuity mistake: Just before Peter bends over beside Reese, an extra is starting to walk behind them. The next shot shows the cereal on Peter's head and we should be able to still see the extra, but there's no sign of him.
Continuity mistake: At the beginning of the show, Doug is working on the computer while Mark is talking to him. At first there is a document sitting on top of a thick black book but that disappears after a couple of shots - and neither of them touched it.
Good Luck, Ruth Johnson - S5-E9
Continuity mistake: A detective goes into Wilson's room to talk to him, and Carol joins them, sitting near the end of the bed by Wilson's feet. A couple of shots later, as the detective talks to him, Carol is suddenly sitting by his knees, even though she never changes positions.
Continuity mistake: The timeline makes no sense. Carter goes home early and is working out in daylight at home. Kerry needs to leave at 6pm and Mark has a hockey game at 8pm. Luka and Abby are out on a date, after dark, when they are mugged, next Mark is at the hockey game. But shortly after, Kerry is getting ready to leave when Carter comes back to finish his shift. After that, Elizabeth is back in the ER working. Nothing in this timeline makes any sense.
Continuity mistake: During the last 2 minutes, Jerry is patronizing Dr. Waver. As he walks away, you see Dr. Greene (who has not been in this episode until now) walk across the hall in the background. A few moments later, outside, after Dr. Carter finishes chatting with the fire chief, he bumps into Dr. Greene outside. Dr. Greene is on his way in for his shift starting in 5 minutes and explains that he is coming straight from the airport. (00:43:22 - 00:44:50)
Character mistake: This has happened a few times before on this show. At the beginning of the episode, they are having a very loud party in the ER. There is no possible way this could ever happen in a real hospital. Even during an extremely quiet period, which rarely happens at County General, it would be extremely rude and unprofessional for patients. There's no way Kerry would be OK with such activities.
Continuity mistake: This episode is an instant continuation of episode 13. At the beginning of the episode, Kerry is walking in and asks if Mark is still on. Carol says he left at 8 for a double date. However, in the last episode, Mark was already at a restaurant with Elizabeth and their parents when Abby pronounced a patient's T.O.D. As 19:19. (00:00:55)
The Letter - S8-E20
Continuity mistake: When Dr Greene opens his locker for the last time, the locker is hinged on the left. However when Kerry and Carter clean out Dr Greene's locker after his death, the locker is hinged on the right.
Visible crew/equipment: When the pedestrian Michael hit goes into the trauma room, when the ER doctor closes the door for a brief second the camera is visible.
Character mistake: In the scene where a patient is about to give birth, Peter asks Jeanie to help him move the patient's legs but calls her by Haleh's name.
Character mistake: In the season 8 episode 'Never Say Never,' In the opening scene before the credits, Dr. Susan Lewis returns to the ER to meet with Mark Greene for lunch. She is standing at the admit. desk and asks Frank, then Luca where she can find Dr. Green. The shot then pans out to a view of her back, exposing the curtain areas. In that shot, Dr. Green walks right past her, no more than 10 feet away. Due to their angles, there is no possible way neither of them would have not seen each other at that moment, yet he walks past, and she continues her hunt for him. (02:15:20)
Visible crew/equipment: At the very start, the camera tracks past the ambulance entrance towards admitting, and when the camera turns as Rolando asks, "What's your ETA?" the reflection of the camera operator is visible on the glass. (00:00:20)
Visible crew/equipment: When Peter examines the little boy again and tells Jeanie and Susan to draw pre-op labs, just as Peter exits the room behind Jeanie, the reflection of the moving boom pole/mic is visible on the door's glass. (00:18:50)
Visible crew/equipment: When Mark and Doug are talking about Jen, Doug says, "If you can't make a marriage work, how the hell am I gonna," and just as Mark joins Susan at the desk, the reflection of the moving boom pole/mic is visible on the glass behind Mark. (00:22:15)
Answer: Take care of your dad.