I watched the one with the blonde girl who literally destroyed her marriage on TV. She admitted to cheating on her husband, then she lost everything when asked 'Do you like yourself?' Well she answered yes and lost all her money. I thought it was classic.
I've never seen it, but I heard an interview with the show's creator. He said the contestants get the questions ahead of time, during the interview process. So they can go home and "come clean" with whomever they need to, before confessing on the show.