By dipping into the Great American Songbook of Christmas Standards, of course:
Bonus: The definitive "Fading Rock Star Salvaging the Remains of His Career with a Christmas Song" song
The 2003 film "Love, Actually" is the reductio ad absurdum--the turning of the amp to 11, if you will--of the niche film genre Episodic British Ensemble Romantic Comedy that was launched by "Four Weddings and a Funeral." It's so jammed with good actors doing pleasant bits you overlook what a mug of froth it all is. One of my favorite plot arcs features the insufficiently treasured Bill Nighy as the Rod Stewart-esque burn-out case Billy Mack, hoping to keep the party train running a little longer by releasing a Christmas song. In his heart he knows that this is the last career stop before the infomercial, but right now he doesn't care. He's back.
Alas, the owner of the rights to the video has allowed it to stay on YouTube but blocked it from being embedded (never understood the logic of doing that, but it's their call), so you'll have to follow this link.
"Hrum, doo-di-doo!" to you and yours.