What are your general comments?
So, to repeat, HSDM will not prepare you for going right into general practice. You simply don't get the overall clinical experience (which begins in the third year), because you're starting to specialize by that time, and choosing which procedures you want to do. Also, there are no traditional lectures and exams - it is ALL student-driven with tutorials and a PASS-FAIL grading system.
So the program is very different, but if you are at ALL interested in going into a specialty, research, or academics, this is the PERFECT program. You can do whatever you want, 100% of postgrads get into their specialty of choice, and there are an enormous amount of resources, both with advising, technology, and experience. (Just make sure you let them know you know how to go after what you want and are proactive. Also, you need to be a leader, since all the learning is done in small groups with little professor involvement).
Also, you simply cannot beat the facilities, dorm, history, library, cafeterias. This is obviously a Harvard school! Every building looks like a museum.
As for the interview, they ask very open-ended questions and let you do most of the talking, since they're looking for a very specific type of personality to match their "problem-based learning" style. If you're invited, you have the numbers - the interview is just seeing your style.