My favorite is Vince Guaraldi's "Christmas Time Is Here" from "A Charlie Brown Christmas."
I purchased "A Charlie Brown Christmas/Vince Guaraldi Trio" CD last year (It was the #1 selling CD for quite some time in 2005). Guaraldi's smooth jazz tracks are second to none, and the CD reminds of Christmas' past when I was a kid. On a scale of 1 to 5 it is a 7.
Noel, Silent Night, Silver Bells, Hark the Herald Angels Sing, Drummer Boy, The Christmas Song, Dreaming of a White Christmas, Santa Baby... I love them all, what a wonderful time of the year!!!
I especially love the older stuff, the late 40's thru the 60's & 70's. Frank Sinatra, Dean Martin, the Temptations, and so on.