Okay, technically I think I may have mentioned most of these in previous years. But this is the first time I've brought them all together for your amusement/enjoyment.
So here you go. Enjoy.
Best Song that involves Luciano Pavarotti and a small child:
Best Christmas Song Ever to Include the Words "nuclear fallout zone":
"Stop the Cavalry" by the Cory Band
Which is, of course, technically not a Christmas song. But it's still the best Christmas song ever.
Best Christmas Song Ever to Include the Words "bean dip."
"Merry Christmas From the Family" by Robert Earl Keene. (Watch the video. His grin tells me he's in on the joke.)
Best Christmas Song for those Ambivalent About the Season:
Christmas Eve in Sarajevo
(Embedding for the official video is disabled. But this works just as well. Just enough non-joyful feeling here to tell you you're not alone.)