Sorry if this appears like I’m continuing to pick on her, but this Sarah Lacy interview with the Digg guys is a good demo of how NOT to talk over someone you are interviewing — on-stage, on-video or on-audio. Perhaps you can do so while conducting an interview for something you are writing (I’d practice avoiding it there, also), but (and this is something I’ve learned from radio reporters) when you are interviewing for “broadcast” (or podcast) never say “yes” or “uh-huh” or “right” or anything while someone is answering a question.
Why? Lots of reasons, some technical and others are just common sense.
Saying, “right” sounds like you are approving what they are saying — and that’s okay if it’s two tech people involved in a conversation, but not if it’s a “reporter” interviewing a “subject.” Don’t keep saying “uh-huh” as if you are the arbitrator of whether or not what they are saying is correct, or not.
But the most important reason not to talk over someone else, however is this: It will make you very popular with the person who is editing your video or audio. He or she will thank you for being such a pro.