A detail that has always bothered me...
Literally - from the first time I saw the film (and I was seventeen at the time, I think).
Brick resents his wife, sometimes (or so it seems) to the point of hatred.
He also clearly loves her and desires her.
Nothing strange about that.
What is "strange" - or, more accurately, not true to life - is the fact that, in their dialogues, he barely utters a sentence without saying her name.
"No, Maggie".
"Yes, Maggie."
"What's that, Maggie?"
"Do you, Maggie?"
"Is that so, Maggie?"
(etc., etc., etc., to the point of distraction - and annoyance.)
That strikes me as odd because one of the surest signs of resentment and/or dislike is the (sub)conscious refusal to say the person's name.
(Unless it's in an aggressive or mocking tone. And yes, his tone often IS seemingly mocking. It's just not consistent or forceful enough to convey a clear message. Maybe it's Newman's delivery, I don't know.)
And of course, the reverse is also true: one of the surest signs of liking or love is the impulse to say that person's name.
(Sarkozy expressed this very simply and very eloquently in his autobiography, where he said about his then-wife that - I am paraphrasing - "after 20 years of being together, it still moves me to say her name.")
It's not something culturally conditioned: it's a common human trait (and very easy to explain, at that).
It is possible, of course, that Williams included this oddity on purpose; only, it's not very clear what its purpose might be (which would, by definition, make it an unsuccessful dramatic device). In any case, it's not that what signals Brick's enduring desire and love for his wife; it's his body language, his gazes, his wounded tone of voice - that sort of things.
And, frankly, I don't think Williams was the subtlest of dramatists, so I would tend to doubt that it was on purpose. (I could still be wrong, of course.)
But if that is the case, it still surprises me that he didn't notice how unrealistic the constant calling of Maggie's name was.
Odd: that's all I can say.