Really nice school, with a really not-so-nice price tag. The facilities are great, and the curriculum is really progressive, with less lecture time than almost any other major school in the country. Students seem to live it there, the area is great, and NWU really seems to encourage its students to get involved outside of school. In addition to the 3 on 3 panel interview, there's a 20 minute interview with one of the Deans to check your file (they don't trust AMCAS) and address any general questions you may have.
Some people have complained about the 3 on 3 format, but if you take the time to talk to your fellow interviewees before hand, it can make the whole experience much less stressful. The two people I sat with were really nice, no-one tried to show up anyone else, everyone laughed, and as a whole, we were really relaxed with each other.