Question: Does any episode of Friends make a reference to the destruction of the World Trade Center towers?
Answer: They actually had to re-shoot the episode following 9/11. Chandler had made a joke about a bomb on a plane while in the airport during the honeymoon episode, so they changed that subplot.
Question: Was Jennifer Aniston actually pregnant whilst Rachel was pregnant in the story? If not, how did they get her to look so 'round'?
Answer: Nope, Jennifer Aniston doesn't have children, it was all prosthetics although it did look really good.
Answer: No, although shortly after the event, there was a "I *heart* NY" seen written on the small message board that hangs on Joey and Chandler's front door. A small tribute, no doubt. Also, during the end-credits of the 2001 Season Eight episode, 'The One After "I Do"' there is a dedication to the people of New York. Joey wears an FDNY shirt as well.
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