The One With Rachel's Assistant - S7-E4
Question: A guy sits in the chair by the couch in Central Perk and Chandler just says "no no no no" and asks him to leave. Is it just some random extra, or someone from the cast/crew/a fan? Seems like a part they'd get someone "special" to play. [I get the point of the joke, I'm wondering specifically about the casting of this part!]
Answer: It was just a random extra, who auditioned who the part.