Here are some that continue to be keepers:
The Night Before Christmas pop-up book by Robert Sabuda. He does simple yet elegant paper constructions.
Here's a You Tube video of someone going through the book, although they don't show all the pop ups to best effect (sorry about the pop up add across the bottom)....
The Snowman Storybook, Raymond Briggs --- and --- A neat, small version of The Night Before Christmas illustrated by Lynn Ferris
Have you seen the video of the Snowman story? Our symphony orchestra played it one year and played the music behind it themselves.... It's on You Tube in several parts. I'll just link the first one and the others can be linked from there:
The Snowy Day, Ezra Jack Keats - this is a Caldecott Medal book.
The Other Wise Man, Henry Van Dyke, retold by Pamela Kennedy
An Amish Christmas, Richard Ammon