My favorite Christmas song, hands down is O Holy Night.
I love the song no matter who sings it but I have to admit that Josh Groban's version of it just gives me goose bumps.
My absolute favorite verses are:
Long lay the world,
in sin and their error pining.
'Till He appeared and the soul felt it's worth.
A thrill of hope,
the weary world rejoices,
for yonder breaks a new and glorious morn.
It just gets me each and every time.
This is certainly getting my in that Christmas spirit!