Hey I only discovered these folks a couple years ago, though apparently they've been around for a while.
The Trans-Siberian Orchestra does awesome Christmas music! Don't let the word 'orchestra' fool you, this is nothing that would have ever been heard coming out of your grandmother's gramaphone! (not that I don't also enjoy the more classical stuff)
I have "Christmas Eve and Other Stories" and "The Christmas Attic". Both CD's tell a story with the music, interspersed with some 'traditional' carols presented in a not-so-traditional fashion. Sounds kinda' like a Christmas rock-opera....
Merry Christmas !!
Valerie