Jessica Ripka - Manger Songs
With only 4 songs (only 3 of which are Christmas songs), this is a pretty short Christmas album. But it packs a punch. There's not a bad song on here. Ripka's unique piano and vocal stylings provide a fresh take on "Joy to the World", "O Come, O Come, Emmanuel" and "Silent Night". You've never heard these songs done in this style, and you're unlikely to ever hear them like this again.
It's a free download over at her Bandcamp page, but any donations go to AIDS relief efforts in Africa. I highly recommend you check it out and donate what you can.
Full disclosure: Jessica is a friend of mine, and I was lucky enough to work with her on a remix on her most recent album. She's a fantastic musician, and a great person to boot.