I applied through my school and received an email saying they would like to schedule an on-campus interview. I interviewed with an audit partner. The interview itself was not at all formal. He did not ask me any questions until the end where he asked if I had any questions. For most of the interview we just talked about our interests i.e. cooking and the news. The interview was very relaxed and again no behavioral questions or any questions really were asked. I cannot say this is how it is for other interviewers, but my interviewer approached it from this angle. A week later, I received an email invitation to attend superday. Superday consisted of a presentation (ask a question!!!!!), a small ice breaker with a partner (answer his/her question!!!!) and then a series of two interviews with a partner and a manager. The partner had a less structured approach (talked about interests and how i dealt with STRESS) to the interview and it went about 25 minutes over the 30 minutes allotted (total 55 minutes) and then I had a much more structured interview with a manager... basic behavioral questions. Then we had lunch with my host, the other candidate and another host-group. To summarize, be yourself, ask questions, dress smart and be friendly! Superday was actually a lot of fun. The partners, the manager, and the hosts were all great!