The Class Gives Thanks - S1-E9
Audio problem: In the scene when Kyle and Aaron are talking to Holly's dad, once Holly's dad has left and after Aaron has said wow, Kyle starts his sentence with the word "later", but if you look at him, he isn't actually saying anything. Then when the camera switches so it's on him, his mouth is in sync with the rest of the sentence.
Shawn (and Gus) of the Dead - S2-E16
Audio problem: After the van the Shawn and Gus are following crashes, Gus says "I'm not getting out there" but his mouth is saying something different. (00:34:15)
Party Animal/Ipso Fatso/Don't Yank My Chain - S1-E2
Audio problem: Party Animal: When Nutty stops spinning after Flippy cuts him up, Nutty can still briefly be heard screaming despite not being able to. (00:05:45)