I had the USC interview last friday. It was by far the best one yet of the four others. Very laid back and actually fun!! The PBL case session is nothing like an interview it is basically just a group discussion. Participate, throw in your two cents and you'll feel fine. It is nothing medically ours was just a case on a problem with a household item. Do not stress about it, relax and have a good time. Everyone was great, and by the end of the long day we all became friends. The tour was great we actually got to walk through all the clinics and talk to students about what they were doing and how they like the PBL. Oh and get the chicken burrito for lunch at cafe 84 it is to die for!! Good luck