If you haven't seen this yet, get over to Target.com and download the free holiday tunes in their Christmas Gig collection. (My favorite part is that none of them are remakes of the classics ... it's all fresh stuff. Don't hate, but I get sick of new people singing old Christmas songs. I do.)
My very favorites are You'll Never Find My Christmas by Bishop Allen, Get Down for the Holidays by Jenny O., Super Mama by the Pinker Tones, 10,000 Watts by Crystal Antlers, Party Hard by Little Isadore and It's Christmas by Coconut Records.