When the Simpsons report to Chief Wiggum that a theft has taken place, he states that a robbery has taken place at '723 Evergreen Terrace'. But the Simpson's address is 742 Evergreen Terrace.
When Homer is on the news talk-show he puts his hand on his chest and the opening of his shirt appears under his hand.
When Homer and his posse kick the burning leaves, Homer shouts "No burning leaves without a permit!", however his mouth is clearly not moving.
At 14:48. When Homer is drinking beer with the underage kids, all three boys are chanting, "Chug! Chug! Chug!" to Homer. But their mouths are clearly saying, "Go! Go! Go!"