I applied last year and was soooo nervous about the interview portion, like almost had a panic attack and wanted to run away and not even go to the interview, I was that nervous! Let me tell you, it's really not as bad as you think though I'm sure that doesn't make you feel any better. My interviews ended up being much more like conversations instead of interrogation style, question-answer interviews. It was much more like tell me about this volunteer experience etc. and oh so you worked here? so it'll come a lot more natural than you think. Of course, this all depends on the interviewer you get but really the interviewers are not out to get you and see you fail (or at least I would hope not). They understand you're nervous and basically they just want to try and get an idea of the person you are and that you are applying to pharmacy school for valid reasons and that you can handle pharmacy school. However, it really is important to come in prepared with what exactly in your experiences, your background you want to highlight. Have examples ready to choose from. Feel free to give your thoughts and opinions on the field of pharmacy. I believe that's what I did that made me stand out.
Also, I definitely recommend checking out the info. here on SDN of reviews of past interviews like the previous poster said. For Baltimore, all the questions I had read on the interview feedback were used pretty much word for word during my interview so they really do recycle questions! Good luck! Don't let the nerves get the best of you b/c really they're just trying to get to know you beyond your paper application. =) You'll do fine!