I interviewed there last year.
My interview was very conversational, focusing mostly on a few of my experiences listed on my AMCAS application. No unexpected or outrageous questions.
I didn't get one, but most people last year reported that they were presented with an ethical question of some kind. Those can be tough.
Keep an eye on the interview feedback page to see if anything unusual (certain types of questions, change in their interview format, etc.) has come up this season. Also, as an aside, it can be a little bit of a challenge to find the admissions building in the morning. Get directions, and give yourself plenty of time to get there (It was EARLY, 8 am I think!)
Best of luck.