Most scenes with Minny and Celia count, especially the scene where Celia suggests they burn the fried chicken a bit in order to keep up the charade that Celia is actually cooking everything instead of Minny, and the look Minny gives her is absolutely hilarious. You do not mess with Minny's fried chicken.
Becomes a Brick Joke later when Celia's husband reveals at the end that he knew from the start what Celia and Minny were doing... because the first night she cooked, the food was too perfect.
Hell, the Terrible Awful hands down. Minny giving Hilly the pie and telling what's in it? Funny. Mrs. Walters laughing at Hilly's reaction and telling Minny to run? Even funnier.
This gem from the novel, after Skeeter announce that the book is being published: "Just as soon, we're all hugging each other. Me and Aibilene. Aibilene and Minny. Minny looks in my general direction."
Hilly gets to the chapter of the book that covers the pie, and starts screaming bloody murder. This is right after a group of black girls breaking into howls of laughter at the same chapter.