Perfect book for the crazy, materialistic holiday season.
Remember "Love, Actually"? Not the Hugh Grant/Martine McCutcheon scenes, but Laura Linney caring for her mentally ill brother, Emma Thompson keeping it together for the children's sake. Family love, not always rewarding, but somehow fundamental.
Magnify that theme several times over, and you have Khaled Hosseini's novel. Antidote for Christmas Day domestic tension.