Other faves:
Point of Impact
Watership Down
The Stand
A Canticile for Liebowitz
Forever War
Sophie's Choice
Hound of the Baskervilles (or any Sherlock Holmes story)
Gone With The Wind
The Three Musketeers
All Quiet on the Western Front
Animal Farm/1984
Dune
Lord of the Rings
The Sand Pebbles
Keith Laumer's Retief stories
"Doc" Smith's Lensmen series
Horatio Hornblower novels
Sharpe's Rifles
Starship Troopers, Tunnel in the Sky, The Puppet Masters
I know the list is weighted pretty heavily with scifi/fantasy, but that's my main area of recreational reading interest.