The position and amount of Homer's pink papers during the therapy session changes throughout the scene.
Maude confirmed they don't have insurance to cover the damage to their house, because Ned doesn't believe in insurance because he considers it a form of gambling. But it's illegal to own some property without insurance, especially a car, which is something Ned owns.
When the citizens of Springfield are inside the Kwik-E-Mart, Brandine (Cletus' wife) has white hair as opposed to her usual red.