In no particular order:

A Christmas Story
How The Grinch Stole Christmas
It's a Wonderful Life
Rudolph the Red-Nosed Reindeer
A Charlie Brown Christmas


Honorable mentions (again, in no particular order)

Frosty the Snowman
The Little Drummer Boy
Home Alone (1 & 2)
A Christmas Carol (1951, starring Alastair Sim)


"Growing up my dad was like 'You have a great last name, Galifianakis. Galifianakis...begins with a gal...and ends with a kiss...' I'm like that's great dad, can we get it changed to 'Galifianafuck' please?" -- Zach Galifianakis