I actually felt like I did great. My faculty interviewer was a really nice guy and the interview went for an hour and 45 minutes (it's supposed to be 30min to an hour). We talked about all my EC's in depth, we talked about the area, we talked about, well a lot. I felt like we really connected. I thought my student interview was solid, not amazing fireworks, but solid. So, who knows what it was . . . maybe they just want to see if I really want to go there.
Edit: For reference my MCAT is well above their average, but my GPA is a little below.