Ian McEwan: Atonement
Marilynne Robinson: Gilead
The best novel I've read in ages.
Mark Haddon: The Curious Incident of the Dog in the Night-Time
This book can help people understand what it's like to have autism or Asperger's Syndrome.
Willa Cather: My Antonia
When I read this book as a teenager, I became enchanted with Nebraska. I moved from North Carolina to west-central Nebraska when I was 25 and lived there for about three years.
William A. Sabin: Gregg Reference Manual
This is my favorite grammar and usage reference. It's clear and easy to use.