Hey, Slacker. Don't worry too much about the interview at BU. I had mine last October in L.A. The interview was very relaxing. My interviewer asked me only one question: " Tell me about yourself." And he spent the rest of 30 minutes talking about the school's program, APEX program, and so on. Just try to relax, and show them that you are interested in BU, by asking some questions about the school's program (especially APEX), research, and etc. Hope this helps.