Non-fiction totally counts. Totally.
List 15 books you've read that will always stick with you -- the first 15 you can recall in 15 minutes.
1. Sex and Sunsets - Tim Sandlin
2. Libra - Don Delillo
3. Watership Down - Richard Adams
4. Red - Jack Ketchum
5. The Curious Incident of the Dog in the Night Time - Mark Haddon
6. The Left Hand of Darkness - Ursula LeGuin
7. Endless Forms Most Beautiful - Sean Carroll
8. Kiss Me Judas - Will Christopher Baer
9. Gerald's Game - Stephen King
10. Collapse - Jared Diamond
11. Life of Pi - Yann Martel
12. The Gunslinger (or anything from TDW series, really) - Stephen King
13. Beasts of No Nation - Uzodinma Iweala
14. The Screwtape Letters - CS Lewis
15. The Hitchhiker's Guide to the Galaxy (the whole series, except Mostly Harmless) - Douglas Adams
1. Sex and Sunsets - Tim Sandlin
2. Libra - Don Delillo
3. Watership Down - Richard Adams
4. Red - Jack Ketchum
5. The Curious Incident of the Dog in the Night Time - Mark Haddon
6. The Left Hand of Darkness - Ursula LeGuin
7. Endless Forms Most Beautiful - Sean Carroll
8. Kiss Me Judas - Will Christopher Baer
9. Gerald's Game - Stephen King
10. Collapse - Jared Diamond
11. Life of Pi - Yann Martel
12. The Gunslinger (or anything from TDW series, really) - Stephen King
13. Beasts of No Nation - Uzodinma Iweala
14. The Screwtape Letters - CS Lewis
15. The Hitchhiker's Guide to the Galaxy (the whole series, except Mostly Harmless) - Douglas Adams