An american girl in paris (part une) - S6-E19
Audio problem: When Big calls Carrie and is leaving a message after Carrie has long since moved to Paris, Charlotte is there. She picks up the phone and says "Hi, it's Charlotte", but her mouth does not match the words. Her mouth says something like "Hey" not "Hi".
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl