Continuity mistake: During the scene where Ted is explaining to Dr. Kelso about the stethoscopes being too tight, Ted is holding one in his hands. When seen from Dr. Kelso's point of view, the earpieces (white) are close together but when seen from the side they are crossed far past each other.
Continuity mistake: When Carla tells Turk off the second time (for not standing up for her) she is to the right and Turk is on the left, but when she leaves she walks to the right and passes Turk as he says "You're absolutely right baby and I apologise". This is because they re-used the shot from the first version of that day where Turk was standing on the right after he stood up to Kelso.
Continuity mistake: When Elliot goes to the bus depot to stop Shawn from leaving, she jumps out of the car leaving the car door open. When she's on the phone with Shawn, the car is behind her and the car door is closed. As the bus pulls away, the car door is open again. (00:19:30 - 00:20:25)
Continuity mistake: When Carla & Elliott get into the back seat of the vehicle after attempting to hire a male prostitute, you can see them clearly in the close shot. In the next (long) shot, when it is revealed to be a police cruiser, there is a cage between them and the camera. This cage disappears again in the next close shot.