Audio problem: Grandma's words don't match her mouth, especially when asking Ashley and Carlos what soda they want.
Monkey See, Doggie Do / Mommy Fearest - S1-E2
Audio problem: In "Mommy Fearest", Ima Goodelady asks the Powerpuff Girls where they are going. Blossom tells her they're fighting crime, Buttercup speaks and then Bubbles adds, "Duh." However, her mouth doesn't move.
The Planet of Dr. Moreau - S1-E4
Audio problem: At the very beginning of the episode, the Silver Surfer emerges from a wormhole screaming "No." If you look closely as he is approaching the camera, his mouth is closed until just before he slows his approach.