I keep thinking Deborah Allen's "Rocking Little Christmas" should be more famous. I love it too much, probably because it really isn't about anything other than having fun with someone you especially like.
But for sensual secular Christmas songs, no one can top Eartha Kitt's "Santa Baby":
All I Want for Christmas Is... Jews -Faux Mariah Carey has a surprisingly profound insight: "They may have killed our savior; that's not the best behavior. That's okay, he rose three days later." Any Christian who ever heard, "The Jews killed Jesus," should've answered, "So what? He got better."
God bless us all, every one!
—Charles Dickens, A Christmas Carol
P.S. For a generally more spiritual grab bag of Christmas videos: A Christmas grab bag.