My Best Friend's Mistake - S1-E3
Visible crew/equipment: In the scene where JD and Elliot are treating a patient and JD says "It's the closest thing I had to a date recently" the microphone pops into screen from above at least two times.
My Old Lady - S1-E4
Visible crew/equipment: You can see just the tip of the boom mic on top of the frame for 5 seconds, before Dr. Wen tells Turk that he passed the Cooper's ligament three times. (01:18:30)
Visible crew/equipment: When Danni and JD fall out of the tree you can see the safety mat they land on.
My Best Friend's Mistake - S1-E3
Visible crew/equipment: When Dr. Kelso sits on the edge of a bed smoking a pipe, he says "right you are, sweetheart" and you can see a boom mic pop into view, above his head. (00:05:35)
My Super Ego - S1-E7
Visible crew/equipment: When J.D. goes to apologise to Nick Murdoch, just after he passes the torch to him, Nick says "we need to get the results of this urine sample." As he says this line, the boom can be seen. (00:14:50)
My Old Man - S1-E19
Visible crew/equipment: Right at the beginning of the episode, when J.D. walks along and then stops in front of the desk, you can see the green tape marker on the floor which he stops at. (00:00:05)
Visible crew/equipment: When Todd says "Why won't any women talk with me?" it cuts to a girl saying "Because you're slimy." You should be able to see the boom mike coming into frame above the clock on the wall.
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 shadow of the camera after Elliot spins around on the close up before Dr. Cox enters. (00:01:05)
Visible crew/equipment: When JD and his date are riding in the car, JD runs over something. When they stop the car to see what it is you can see a kneeling crew member reflected in the side of the car.
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)
My Last Day - S1-E24
Visible crew/equipment: When Dr. Kelso is walking and talking with J.D. and Dr. Cox, notice the glass with the Zofran poster in back of them. You can see the camera guy, boom mic and a crew member with the white shirt walking backwards. (00:15:10)
Visible crew/equipment: During the scene where JD is fantasizing about dancing with the German patient to "99 Luft Balloons," a crew member's green-sleeved arm is momentarily visible throwing balloons into the shot.
My Old Man - S1-E19
Visible crew/equipment: When Turk and Carla are talking about the Cuban restaurant, as Carla walks away and the camera pulls back, you can see two tape markers on the floor, showing both of them where to stand. (00:12:50)
My Overkill - S2-E1
Visible crew/equipment: When JD is thinking to himself while the characters are 'drifting through the halls', you can see the rope and trolley device that is being used to pull Carla along.
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)
My Old Friend's New Friend - S4-E1
Visible crew/equipment: When JD and the Janitor are having a conversation outside the hospital, on the giant X, crew members are reflected in JD's helmet when the camera is facing the Janitor.
My Drive-By - S4-E24
Visible crew/equipment: When Doctor Cox looks at himself in the gold balloon each time, look slightly to the right of the shot, you can see the camera and part of the camera man in the reflection. (00:08:00)
Answer: No, it was a fake, they used a stamp.
It is real.