I love Eartha Kitt's slinky "Santa Baby". Madonna's cover from the '80s is too cutesy for me.

My favorite Christmas carol is an obscure one...

Lo, how a rose e'er blooming from tender stem hath sprung
Of Jesse’s lineage coming, as men of old have sung.
It came, a floweret bright, amid the cold of winter,
When half spent was the night.

Isaiah ’twas foretold it, the Rose I have in mind;
With Mary we behold it, the virgin mother kind.
To show God’s love aright, she bore to us a Saviour,
When half spent was the night.

This Flower, whose fragrance tender with sweetness fills the air,
Dispels with glorious splendor the darkness everywhere;
True Man, yet very God, from sin and death He saves us,
And lightens every load.