Hmm, I can't remember all that much about the Monash interviews, but there was a section based on simplifying a scientific term to simulate communication with not-so-medically-orientated patients. The word I received was "condensation" if I remember correctly.
Then there was a section in which we had to discuss a medical/societal issue. I had to talk about mental illness.
There was also a part where they read out a story, asked us to summarise the major points of that story, identify the issues present and to discuss a few of those with them. The story I received was some Bend it like Beckam-esque soccer story.
The interviewers also ask generic questions about who you are and why you desire a seat in Medicine, that sort of thing. It's not a particularly long, gruelling interview, and the interviewers can be nice and jocular. There are 3 of them - one a doctor from the wider community, one a Monash graduate(?), and one a member of the community.