The DVD version of the episode features an additional scene where Monica and Phoebe help a battered Rachel get ready for the party. This episode is the first appearance of Rachel's bedroom in the series.
Chandler getting bitten by a peacock at the zoo was previously mentioned by Phoebe in The One with the Blackout (1994).
First appearance of David.
"Shiny Happy People" by R.E.M. is played in the beginning of the New Year's Eve party scene. This was the original theme song from the pilot before it was later replaced by the iconic "I'll Be There For You."
First appearance of Marcel, Ross's monkey.