Trivia: A bit too unlikely to be just a coincidence, but I can't work out the significance. The doctor who delivers Phoebe's triplets (the one who loves Fonzie) played the evil head of Wolfram and Hart in "Angel". The doctor who delivers Erica's twins in this episode also plays the evil head of Wolfram and Hart in "Angel" (after the death of the first guy).
The One Where Joey Speaks French - S10-E13
Trivia: Just a thought: Every time Rachel hears someone talking French, she instantly becomes aroused (even when a woman does it). A few episodes later, she decides to move to Paris. Boy, that would be a hard time for her...
The One Where The Stripper Cries - S10-E11
Trivia: When Ross Geller and Chandler Bing are at the reunion, Ross says she dumped him for Michael Skloff, who made the theme tune and additional music.
Trivia: In the scene where Monica and Chandler hold their twins for the first time, a nurse can be heard paging "Dr. Matthew Perry" and "Dr. Green" on the intercom.
Answer: Usually by the seventh night of Hanukkah you don't know what to get the other person, and you will probably resort to getting the other person something insignificant. Chandler is basically saying that the pen is a stupid gift.