These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
There's evidence that George is gay, having married Martha to try to advance himself. There are subtle moments when it seems George is hitting on Nick.
Then again, just about everyone has a moment together at some point.
Award Snub: A rare example of it being done after getting awarded: It was awarded the Pulitzer Prize for Drama, but was revoked by the Moral Guardians on the advisory board. The film, on the other hand, was showered with 13 Oscar nominations.
Nightmare Fuel: This first came out during the Cuban Missile Crisis. People expecting to escape from the most terrifying two weeks in history instead found themselves confronted by (then) shocking language and one of the most depressing depictions of marriage ever.
Tearjerker: Martha's freak out towards the end when her and George's "son" has been killed off, the pain emphasized further with Elizabeth Taylor's excellent acting in the 1966 film adaptation.