Must have Christmas Carols for my Xmas Party

[E equals MC2]

Name the songs or even the sung artist if that version is the best...

So far I have:

Jingbell Rock
Santa Clause is Coming to Town by Mariah
Hark the Herald Angels Sing by Mariah
The Nutcracker Sutie by Tchaikovsky
It's the Most Wonderful Time of the Year
Silent Night


I know I'm missing TONS. Both contemporary or traditional.. share them all!