Laura's answer is here, and Lydia's is here. Deb will be up next week. As for me ...
I've learned a lot about writing and storytelling from other writers. I've been knocked flat by the beauty and power in their prose, by the intricacy of their plotting, the individuality of their characters. I've gotten hooked by ideas that just wouldn't leave me alone. A few things that have inspired me (to name only a few of many):
The stark rhythms and brittle fragility of Wintergirls, by Laurie Halse Anderson.
The lyricism and longing in Shiver, by Maggie Stiefvater.
The exploration of identity and loyalty in Camo Girl, by Kekla Magoon.
The flat eeriness and dread of Descent Into Hell, by Charles Williams.
The conceptualization of the afterlife in The Great Divorce, by C.S. Lewis.
The frightening ease with which good people become evil in The Lucifer Effect, by Phil Zimbardo.
The phenomenal pacing and timing of The Hunger Games, by Suzanne Collins
I could go on and on, but I'll stop there. How about you? What books have inspired you and why?