When Turk and the Janitor are playing the game together then it is supposed to be 2 player but the screen shows only 1 player on it. No split-screen or 2 characters
When Turk and J.D. are playing the video game and Carla is standing in front of the TV, you can see that in between shots J.D. is first holding the controller up by his face and then brings the controller down to his waist, but in the next shot, he's holding it in the original position up by his face
When Turk and the Janitor are playing the video game, Turk is using a wireless controller with a battery pack, and the Janitor is using a wired controller with the cable removed and no battery pack. Whenever the shot switches to Turk, he is using the controller without the battery pack.
In the opening video game sequence when Carla hands J.D. the console, the back is facing J.D., but when the camera angle changes the back is now facing Carla. This is most likely so that the console logo does not show up on screen.
There are numerous errors regarding the video game Turk is playing. The controllers are not even turned on. Everyone playing is randomly pressing buttons, not in any recognizable way. Carla moves the Xbox 360 without unplugging any of the cords, meaning it was never plugged in to begin with. Two players are playing but the screen only shows one person. The battery pack for one of the controllers is missing.
Carla says that she has finished the video game many times on her own, while Turk earlier said that it takes two to finish the game and he had the Janitor as his assistant. How could Carla finish it all by herself?
When the doctor is delivering Kim's baby, it shows her cutting the umbilical cord, but when she holds the baby up, there's no stump.
When Dr. Cox is walking with his baby and turns around to talk to JD, a doll can be seen instead of the baby.
There is an issue with the controllers for Turk's "video game". One is a regular wireless controller with a battery pack, but the other is a wired controller that just has the cable removed. There is no way this controller is capable of functioning.
After JD, Turk, and Carla complete their celebratory jump-hug, you can see Turk's lips moving as the opening theme comes in, with his next line being cut off.