I came across a gem of advice in an article about interviewing that I whole-heartedly agree with: shut up and listen. Yes, it may seem a little counter-intuitive. After all, you're the one being interviewed, not them. But, there are times when you really need to slow down and make sure that you're practicing active listening.
By expanding on the advice in the article and adding some of my own on this topic, I can suggest these guidelines for listening during the interview.