Oh, I used to reread The Dark Is Rising every winter around Christmas, too - often I'd even try to match up the chapters with the calendar, so I'd read the Winter Solstice chapters on Winter Solstice etc. (it's possible to do this until the Boxing Day or so, after that the book stops keeping such a clear track of the passage of time). I stopped doing that regularly at some point, but sometimes I still enjoy picking it up near Christmas. Should perhaps give it a reread around the coming Christmas! It's such a lovely book.