The questions were designed to screen personality rather than thought process, or maybe both. The phone call with the recruiter was easy, but he asked multiple times about my interest to a particular region for sales deployment, which makes sense.
Here are some interesting questions the hiring manger/program director asked (they are probably different every time):
1. Why do you get up?
2. If I call your mother now, what is the first thing she will say about you?
3. Who is the person you look up to? why and what would you say to he/she?
4. Share with me one thing that is not on your application/resume.