Visible crew/equipment: When Danni and JD fall out of the tree you can see the safety mat they land on.
Visible crew/equipment: When Elliot is talking to the patient you can see the boom mic through the reflection of the window next to patient's forehead. (00:14:35)
Visible crew/equipment: You can see the tape marker on the floor where J.D. and the other Doctor are supposed to run into each other. (00:25:30)
Visible crew/equipment: When Ted walks past J.D. and the Janitor you can see the mic on top in middle of screen. (00:09:05)
Visible crew/equipment: When Dr.Cox leaves the room you can see the boom mic in the top of the window of door glass and then it goes up and disappears out of frame. (00:06:15)
Answer: Dan was drinking beer and Cox feared that Dan might get so intoxicated he would fall asleep and drown in the tub.
Mortug