The Best Short Novels to Buy My Dad for His Birthday?!?

It's my dad's birthday coming up and while he pretends to like reading he's got a crap attention span and gives up on big books. Any and all suggestions for the best short novels (not short stories) to buy him would be EPICALLY welcome. My list so far...
  1. Love story.
  2. Heartburn.
  3. Franny and Zooey.
  4. Department of Speculation by Jenny Offil
    Brief, abstract, funny, beautiful, of the moment
    Suggested by   @bjnovak
  5. The Lover by Marguerite Duras
    Suggested by   @maddiecalls
  6. The Old Man and the Sea by Ernest Hemingway
    If by any chance he's never read it, the shortest classic. You can feel like you accomplished something important in like two hours.
    Suggested by   @bjnovak
  7. The Invention of Morel by Alfred Bioy Casares
    Suggested by   @maddiecalls
  8. Giovanni's Room by James Baldwin
    Suggested by   @maddiecalls
  9. Speedboat by Renata Adler
    Suggested by   @maddiecalls
  10. Your Fathers, Where Are They? And the Prophets, Do They Live Forever? by Dave Eggers
    This is my choice! A fantastic brief underrated novel from this past year, entirely told in dialogue, reads like a breeze, heart-pounding and still packed with some truly counterintuitive, challenging moral philosophy.
    Suggested by   @bjnovak
  11. We Have Always Lived in the Castle by Shirley Jackson
    Suggested by   @maddiecalls
  12. The Uncommon Reader by Alan Bennett
    Funny, light, unexpected, and it's about someone who pretends to love reading but actually doesn't read much. (At least at the beginning.)
    Suggested by   @bkwurm
  13. The crying of lot 49 by Thomas pynchon
    Suggested by   @gilbaron
  14. The Ballad of the Sad Cafe by Carson McCullers
    Suggested by   @victor
  15. Brooklyn by Colm Tóibín
    Suggested by   @camilia