(Actually, it's just my favourites that I have on my computer. My favourite song is Oh du Fröhliche. But it's impossible to find a recorded version of Oh du Fröhliche that I like. There's only crappy cheesy versions around. I want a choir. As you'll find when you listen to my favourites, I'm addicted to choirs.)
Anyway...
Chœur les Rhapsodes - Il est né le divin enfant
Petits Chanteurs du Mont-Royal - Les Anges dans nos campagnes [Actually, I love the German version of this as well ("Engel haben Himmelslieder", bzw. "Engel auf den Feldern singen", depending on the translation), and the English one, too ("Angels we have heard on high"). But this is the prettiest performance of it that I could find. So there.]
Altrincham Choral Society - The Twelve Days of Christmas [totally pointless song. But lovely nonetheless. And there are many amazing parodies of this one around, such as The Twelve Days of PotO.]
Oslo Gospel Choir - Oh Come, All Ye Faithful [Actually, I prefer the Latin text, but I like this performance better.]
Malmö Chamber Choir - Dotter Sion, frojda dig [In fact, it's the German version of this I'm in love with. But apparently, there are NO downloadable recordings of it in German. So I have to go with... Swedish? I think it's Swedish. Malmö's in Sweden, right?]
Rostocker Motettenchor - Gloria in excelsis deo [There! Latin! You were all waiting for this, weren't you?]
Loreena McKennitt - The King
... and that's that. Now you can all boggle at just how old-fashioned my taste in Christmas music is. Yeah.