Audio problem: When they are trying to escape Koopa and the little caveman speaks, then Luigi answers him, he has the Princess' voice.
All Americans - November 6, 1962 - S2-E14
Audio problem: During the speech where Al tells Sam to quit (to force Chewie to play), Sam says he can't quit but his mouth doesn't move for a couple seconds after the words start playing.
Onna no koi wa snesouyo! Kakutou shintaisou de iza shoubu - S1-E12
Audio problem: When Ranma and Akane close the door behind them avoiding the gas trap, the English dub adds a lot of coughing, even when they have their mouth closed. (00:16:40)