vid1900 from pinside has been really helpful
here is some helpful info for you wotto:
"Stern also brought AC/DC, hooked it up to an external speaker and had 2 cameras on it.
Camera one was trained on the playfield, and camera 2 was trained on the player's face!
Both were then played back on a 42" monitor above the game for everyone to see. It was funny to watch people biting their lip, throwing their heads back, wiping away tears..."