In reply to The Lemming: I really like "I believe in Father Christmas" - all the ELP ridiculous excesses in one schmaltzy bundle. I also have a big soft spot for December will be Magic Again by Kate Bush, possibly because you hardly every hear it.
Fairy Tale has just suffered from ridiculous levels of over exposure as the only credible christmas song (it isn't, but I think someone said this on Radio 1 about 10 years ago, and it went downhill from there)