The show's crowning moment demonstrated that despite their differences, Julia really does care about her little sister. Can also be seen here.
JULIA: *enters dressing room* Excuse me, aren't you Marjorie Leigh Winnick, the current Miss Georgia World?
MARJORIE: Why, yes I am.
JULIA: I'm Julia Sugarbaker, Suzanne Sugarbaker's sister. I couldn't help over hearing part of your conversation.
MARJORIE: Well, I'm sorry. I didn't know anyone was here.
JULIA: Yes, and I gather from your comments there are a couple of other things you don't know, Marjorie. For example, you probably didn't know that Suzanne was the only contestant in Georgia pageant history to sweep every category except congeniality, and that is not something the women in my family aspire to anyway. Or that when she walked down the runway in her swimsuit, five contestants quit on the spot. Or that when she emerged from the isolation booth to answer the question, "What would you do to prevent war?" she spoke so eloquently of patriotism, battlefields and diamond tiaras, grown men wept. (Suzanne is now outside the dressing room door, now ajar slightly.) And you probably didn't know, Marjorie, that Suzanne was not just any Miss Georgia, she was THE Miss Georgia. She didn't twirl just a baton, that baton was on fire. And when she threw that baton into the air, it flew higher, further, faster than any baton has ever flown before, hitting a transformer and showering the darkened arena with sparks! And when it finally did come down, Marjorie, my sister caught that baton, and 12,000 people jumped to their feet for sixteen and one-half minutes of uninterrupted, thunderous ovation as flames illuminated her tear-stained face! *Julia leans into Marjorie's face* And that, Marjorie, just so you will know, and your children will someday know, is The Night. The Lights. Went Out. In Geor-gia!
Most amusingly, Marjorie tried to interrupt her at least six times, and Julia does not stop until he has said everything she wants to say (and completely shattering Marjorie in the process). A vocal version of the Unflinching Walk, and it was glorious.
Another crowning moment happens during the AIDS episode, in which the Sugarbaker firm is hired to design the funeral for a friend of theirs who is gay and dying from the AIDS virus. One of Julia's longtime friends overhears them discussing the arrangements and goes off on a tangent, stating that the young man is getting what he deserves, and that the one good thing about the virus that it is "killing all the right people". She also says that she's exempt from the virus because she's not a sinner like the gays are, at which point Julia gets fired up:
JULIA: "Imogene, get serious! Who do you think you're talking to?! I've known you for 27 years, and all I can say is, if God was giving out sexually transmitted diseases to people as a punishment for sinning, then you would be at the free clinic all the time! And so would the rest of us!"