
An american girl in paris (part une) - S6-E19
Visible crew/equipment: Crew member in jeans with filming camera reflected on the Parisian hotel entrance.

An american girl in paris (part deux) - S6-E20
Visible crew/equipment: When the pastry shop scene starts, there's a wide angle of the store and a big glass door opening wide. The whole filiming crew and equipment are perfectly visible.
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen