* HeyItsThatGuy: For starters, [[Film/TheLionTheWitchAndTheWardrobe Mr. Tumnus]] is set out to deliver a missed present.
** [[Series/{{House}} Dr. House]] is his JerkAss brother.
** [[Film/HarryPotter Professor Slughorn and Umbridge]] are their parents!
** [[Film/PiratesOfTheCaribbean Davy Jones]] is Grand Santa.
** [[{{Outnumbered}} Karen Brockman]] is Gwen
* WhatCouldHaveBeen: Creator/MichaelGiacchino wrote a score that ended up being rejected. Harry Gregson-Williams replaced him.
* According to [[http://youtu.be/zwNbMv_Pujc this PSA]] given by Elf 6409EF, Gwen have a baby brother all the way in Denmark.
* VindicatedByCable: Despite mostly positive reviews, the film was lost in a crowded holiday season already full of family films back in 2011, making nary a blip at the US Box Office and only modest business internationally. Upon the DVD release and cable broadcasts beginning the next year, though, the film's reputation began to improve, to the point that it's begun gaining a following as a modern day holiday classic.