The Curious Incident of the Dog in the Nighttime: by Mark Haddon. “Quirky but good.” From Amazon: "Christopher John Francis Boone knows all the countries of the world and their capitals and every prime number up to 7,057. He relates well to animals but has no understanding of human emotions. He cannot stand to be touched. And he detests the color yellow. This improbable story of Christopher's quest to investigate the suspicious death of a neighborhood dog makes for one of the most captivating, unusual, and widely heralded novels in recent years." Big hit when released in 2003, it's since been made into a play.
