Lol, I think you mean Paul Schaffer’s impression of Cher singing “O Holy Night.” 
Hey, I like “Granma Got Run Over By A Reindeer.”
Remember two years ago, when the same guy (Elmo) did the hilarious anti-impeachment ditty, “Kenneth Starr Is Coming To Town?” I’m still laughing.
The best holiday recording I ever heard was The Carpenters version of “Little Altar Boy.”
As for the worst, “Jingle Bell Rock” and “Rockin’ Round The Christnmas Tree.” And “Sleighride” which doesn’t really have much to do with Xmas anyway.
This would be the MOST VILE Christmas song ever in the history of the world! I hate this song. It makes me want to curl up in the fetal position and suck my thumb until Mommy comes to make it better.
In the most whiny voice possible:
Laaaaaahhhst Christmas, I gave you my heart.
But the very next day, you gave awaaaaaaayyeeee.
Thiiiiis Christmas, blah blah blah,
I’m giving it so someone speesssshhhiial.
I’ve heard four different versions of it at work. The worst is by some Sarah McLaughlin wannabe. That version sends me into a semi-comatose state in which I wander around cross-eyed and drooling asking people if I’m special.
There’s this one song I hear a lot too, the only line I remember is, “But it’s not like Christmas at all.” U2 does it, and apparently Cher does as well. Insert electronically digitalized vowels:
But it’s n-ah-ah-t like Christmas at uh-uh-ll.
My God I hate Christmas and I’m agnostic but Jesus surely fell off his throne and cried hysterically after hearing that one.
Honorable mention is Lil Miss Southern Spirit Spears for belting out:
[Insert heavy panting]
Santa, can you he-ah me?
Ah have bin so gud this ye-ah!
And all Ah want is one thing…
Tell me mah true love is he-ah.
He’s all Ah want, just fo me,
underneath my Christmas tree.
Ah’ll be waiteeeng here;
Santa that’s mah only wish this ye-ah!
Sometimes I think of this song and cry myself to sleep.
Here Comes Santa Claus Right Down Santa Claus Lane.
I wanted him to come on my street.
Besides, doesn’t he fly, where there are no lanes?
It’s enough to trouble our troubled youth.
I HATE the Carol of the Bells, all of it, but especially…
merrymerrymerryCHRISTmas
merrymerrymerryCHRISTmas
merrymerrymerryCHRISTmas
merrymerrymerryCHRISTmas
EWWW!
I also hate “Mary Do You Know?”, but more because there’s a fundie radio station in town that plays it at Christmastime basically to be down on the Catholics (of which I am one). What a perfect song for them–the one time that all Christians could basically agree that the Virgin Mother was way cool and here’s this song that’s basically this smarmy fundie singer interrogating the Virgin Mary like Sipowicz sweating a skell down in the pokey. 
Little Drummer Boy is definitely the worst of all time. If the baby jesus is sleeping in a manager, the last thing you need is some kid beating on his drum.
There was also some charity song by British Artists a few years back (kind of a live aid thing) called something like, “Do They Know its Christmas?” While the intention is certainly good (raising money for famine relief), the title and the song always seemed very condescending to me.
‘I Saw Mommy Kissing Santa Claus’ – Little kid sings about watching his mom get her groove on with the jolly old elf. Maybe she was trying to get some extra batteries out of him or something.
I have to join the crowd on “Jingle Bell Rock.” What a loathsome, vile ditty it is! I pretty much dislike most of the Santa songs.
My favorites would be, “O Holy Night,” “Father Christmas” by Greg Lake, and “Christmas Rapping” by The Waitresses.
I always hated “Grandma Got Run Over By a Reindeer.”
Yuck!
Another song I dislike is “It’s Beginning to Look a Lot
Like Christmas.” I didn’t understand the line about
“A pair of Hopalong boots and a pistol that shoots”
until I learned who Hopalong Cassidy was. Even then,
I still thought it was a dumb song. “And Mom and Dad
can hardly wait for school to start again.” If
Mom and Dad think that children are such a nuisance,
why did they have them?
I don’t like “Mary Did You Know” because it’s not Biblically correct.
Of course Mary knew that she was carrying God’s son!
I don’t like “The First Noel” because it’s too lugubrious for a Christmas song.
Another Christmas song I dislike is the “chestnuts roasting on an open fire” song.
I didn’t like the song very much to begin with, and then I heard the most awful
unprintable joke about it. Ugh!
There are many Christmas songs that I DO like. If I had to pick a favorite, it would be “Silent Night.”
It has such a pretty melody, and it’s one of the most Biblically correct Christmas carols. I’ve loved that song ever since childhood.
I LOATHE that damn Feliz Navidad.
Favs are one by jerry LEE lewis, with a refrain about tell santa he can take the freeway down, and Silver Bells.
has anyone here ever heard of, or heard the song about, Santa Mouse? Please tell me I didn’t hallucinate this?
“Is it any wonder, Santa named him Santa Mouse…”
there are some wicked xmas parody songs at Darn Near All the Filk on the web. Have your search engine look for it.
–it’s Xmas at Ground Zero…