Choir of King's College, Cambridge - O Come All Ye Faithful
Handel - Messiah (Atlanta SO/Shaw) (both my mom and I have other recordings but this was the one when I was a kid)
Various - Dr. Demento's Greatest Novelty Christmas CD Ever (awesome -- ripped this one. The Cheech and Chong "Santa Claus and His Old Lady" went totally over my head back in the day but it's hilarious now)
Carpenters - Christmas Portrait (okay, this one *is* terrible. I listened to it the whole way through but I still ripped it. You can blame my mom for that)
I'm sure there were others but I'm blanking on them. That reminds me: I really should give Bach's Christmas Oratorio some spins. I meant to listen to the St. Matthew and St. John Passions for Easter but it slipped my mind.