My must have is Trans-Siberian Orchestra, Christmas Eve Sarajevo
https://youtu.be/2LbmhneqBnE?si=DBS73IJvSW5zBQRC
It's easily overplayed, but if I can get away with hearing it 3 times through December, it's great!
Can't stand... Not going to link Maria Carey.
Edit, also not going to link (gagging) Christmas Shoes (vomits)
Oh my goodness, Christmas Shoes is the worst.