I'm not sure I ever heard a Christmas song I didn't like. Some of my very favorites are No Room, Silent Night, It Came Upon A Midnight Clear, Blue Christmas, Pretty Paper, Grandma Got Run Over by a Reindeer, Grandpa's Gonna Sue the Pants off of Santa, Silver Bells, White Christmas, Jingle Bell Rock, Micheal Jacksons version of Santa Claus is Coming to Town, etc. I love a very eclectic array of Christmas music.
Oh and an old bluegrass song called Beautiful Star of Bethlehem