The Great Gatsby
I just finished re-reading this classic. The first time read it was about 1969, shortly before I was preparing to go off to Yale from my home town in the Midwest. The book hits home in that respect. All of the main characters were from the Midwest, as was Fitzgerald himself.
The style struck me as spare, but when and who decided that every novel must be long and florid? Lord of the Flies is also short and spare, and I must confess that after having posted that thread below, I've decided the book is much better than my first impression suggested. It really does stick with the reader, at least this reader, as does Gatsby.
So then, it really isn't necessary for a novel to be at least 120,000 words...LOL...?