Foil: With Maggie. Both of them are charming, manipulative, self-made people who grew up poor and work hard to get what they want. It's why they earn each other's respect.
I Want Grandkids: Never explicitly stated, and he technically already has several from Gooper and Mae, but he clearly wants at least one from his favorite son and beloved daughter-in-law before he goes.
O.O.C. Is Serious Business: Twice. First, when bumbling, friendly, maternal Big Mama bursts into tears after the latest in decades of rejection by her husband, and second, when she finally Grew a Spine to tell off the meddling Gooper-Mae duo.
Selective Obliviousness: She pretends Brick is still is former youthful golden boy self, acts like her relationship with Big Daddy is healthy, and refuses to acknowledge the idea that he's fatally ill. She's not just an idiot, though; she picks up on the cracks in Brick and Maggie's marriage and shuts down Mae and Gooper's plot to take over the family empire. Heartbreakingly, she even shows a comprehension that Big Daddy doesn't really love her at one point.