The Graveyard Book by Neil Gaiman - it's been a long time since I sat and read a book in one day, but this book I honestly couldn't put down.

Unwind by Neal Shusterman is a book that I won't be forgetting anytime soon.  This book trailer is intentionally vague because I wanted to pique interest without revealing too much.  This was a great story, but be warned - it's disturbing and thought-provoking and, as one of students informed me, "brutal".