What Are Some Unique Holiday Songs I Can Use For My Annual Christmas Mix?

I make an annual Christmas mix that I play on my iPod for my family's traditional get together on Christmas Eve at my aunt's house. I have asked each member of my family to give me some ideas of what to put on it, and so far no one except my Mom has helped me. She came up with a few songs that she enjoys by a few of her favorite artists and bands, and told me some of my Mom Mom's favorite artists as well. My Dad was no help (he was like 'just go for it, you're a music expert, you know what you're doing!') and as far as my sister was concerned, all she wanted was a few Jessica Simpson songs, one Mariah Carey song, and one Justin Bieber song (which I eventually gave into even tho I hate the kid.) So now I'm at a loss. I can't think of anything else to put on there except for stuff that I enjoy and I know that's not right either. I even told my parents that if I filled it up with stuff I enjoyed, it would be nothing but songs from my last two holiday chorus concerts, (which were on there to begin with), handbell versions of traditional songs, and Latin. And that wouldn't be fair to everyone else. (and aside from the instrumental versions) I hate traditional songs that you'd find on a generic Christmas cd. They're so cookie cutter and boring. (I guess coming from a choral background, I get exposed to more unique music) So I've been looking all over the place for new ideas. My best friend had a concert this past Sunday with the local children's chorus he helps out with and we were talking afterwards at the reception. I had told him my little dilemma. And he gave me a few ideas that were really, really cool. I'd never even heard of the songs before. Does anyone have any unique Christmas song ideas they can give me? (not just your traditional 'Jingle Bells, or 'Deck the Halls' and stuff like that.) If there are unique takes on the song....sure, but if it's just the plain old version then no thanks. Both contemporary and old school are good too. I also am a huge fan of Latin as well! Thanks a lot!