I like the question about a great manager as a way of learning from others' experience. Do you find that it's useful in assessing the candidate as well? Are there good and bad answers to that?
There aren't any good or bad answers. There are great people who haven't had a good manager. Good managers also manage not-so-great people. I ask really to understand more about their professional background. Depending on the role, on-the-job training may or may not be OK.