None. Find them all annoying as they are trotted out over and over each year. Last Christmas definitely a big no. At a push I'll go Flying Pickets "Only You"
Ever since I was a kid, it was always Greg Lake and Carol of the Bells (Ray Coniff version). Over recent years a few good new ones have come about, I like Coldplay's Christmas Lights and Michael Buble with the Puppini Sisters singing Jingle Bells, and the Celtic Woman version of Carol of the Bells. Not a fan of Springsteen at all, can't stand his Christmas song.