The One With The Routine - S6-E10
Audio problem: When Ross has finished telling everyone the story of the dreidel, we cut to Monica and Chandler's reaction shot which shows Ross' mouth moving even though he is not talking. (00:01:30)
Dibley Live - S2-E2
Audio problem: During the scene where Jim and Owen are trying to bribe the Vicar with chocolates, just after they take them back, you can hear a mysterious voice say "chocolates". The only person who this sounds like is Jim, but in the next shot, his lips aren't moving.
Audio problem: Right at the end after Heather reveals that Ellen taped over the birthing tape with an episode of thirtysomething, someone says "which one" but no one in the crowd moves their lips.
The Accident - S1-E1
Audio problem: After school when Alex and Ray are walking the camera is far away but you can see that the sound of the person that is talking is different than who is seen talking.