Behavior based interviewing is very popular right now. It is utilized by HR professionals and recruiters alike. Basically, the concept is that past behavior is a strong indicator of future performance.
Always, always, always be sure to give solid examples when asked to in an interview. One of my favorite questions is "Tell me about a time where there was a conflict between you and a co-worker. What was the situation, and how did you try to resolve the issue?" I often hear "I never have conflict with my co-workers." Be honest - we all get into disagreements, no matter how perfect we are (and we are all perfect, right?). Tell them about the time one of your team members didn't meet their deadline on a project. How about the employee who sat next to you and was so loud on the phone that you had to put an ear plug in your non-phone ear? I'm sure we can all think of a time where we had to confront someone on their behavior and it's effect on the group.
Another great questions is "Describe a time when you went above and beyond the call of duty in order to get the job done." My favorite, and most generic, answer is "I do that all the time." Be specific. If you do it all the time, then you should easily be able to come up with a solid and specific example.
With that said, be prepared for these questions in your interviews. Here is a great website that focuses on all kinds of BBI Questions and what they are really looking for by asking them. http://jobsearch.about.com/cs/interviews/a/behavioral.htm
Good luck and happy interviewing!