Back when I was in HS, I was in chorus, and we would auditition for Epcot Center's "Disney Candlelight", which would be a big show with the Voices of Liberty, an orchestra, and a celebrity guest narrator (eg Gary Sinse, Levar Burton, Uncle Freddie from 'Fresh Prince', James Earl Jones, The Black Guy from Miami Vice....)
And we would have a set, which was the following:
Shout for Joy
Oh Come, All Ye Faithful
Il Les Nest
Angels From The Realms of Glory
Oh Holy Night
Rejoiced with Exceeding Great Joy
What Child Is This?
Do you Hear what I hear?
Joy To The World
Hallelujah
Let There Be Peace On Earth*
Was added to the set in 2001 because of 9/11
But still, those songs bring back a lot of feelings about the holidays. I'd say that the bolded ones were favorites long before I was in HS, though.
Also, "Let It Snow" and "It's Begining To Look a Lot Like Christmas" are favorites. Because I'm a bass, I go around doing my best Sinatra impression at times....
Ah, memories....