The alternate title for this episode is "The One with the Creepy Holiday Card." This can be found on the DVD menu of Season 8, Disc 2, and Netflix (UK) though it goes by its original title on the DVD cover, in syndicated reruns, and on Netflix (Canada).
Ashley Clark, who plays Phoebe's friend Roger, also appeared on 'The One With All The Candy', as one of the people outside Monica's apartment asking for candy.
Monica tells Chandler she doesn't want to go out to dinner with Doug because of the way he acted at their engagement party. In season 7, the episode The One with Phoebe's Cookies, Chandler tells Phoebe she doesn't have to get them an engagement gift because they weren't going to have an engagement party.
Shawn Christian who played Rachel's doctor joined the cast of the NBC soap opera Days of Our Lives (1965) in 2008 as Dr. Daniel Jonas; godson of Victor Kiriakis, who is played by Jennifer Aniston's father, John Aniston
In the previous episodes the plate on the Chandler's office door said "Chandler M. Bing", which indicates his middle name (Muriel). In this episode it can be seen that the plate is changed to simple "Chandler Bing" he likely took his middle name off so people don't make fun of him.