At one of my interviews, we split into groups and interviewed directly after other members in our group. When my turn rolled around, I was led to the hall way of offices and waited for the applicant ahead of me to finish their interview. When the door opened a minute or two later, the applicant came out and was crying (red face, tears flowing...not sobbing though, luckily). I could put my hand on her shoulder as we passed and say 'its ok' and then walk into the supposed lions den!
Haha...I was sort of curious/nervous after seeing that. The interview did end up being somewhat high stress and I could tell why emotions ran high. There were two interviewers who took turns with the questions and one interviewer had an interesting approach to her questions. She would look at your file (your essays, for example), pick out something you posed as a strength, flip it around to be a weakness and ask you to account for it.
For example, one theme of my PS was about approaching life with an open mind, and having had many diverse life experiences. So, instead of asking what I learned from this, or something standard, she said something like, "so I see you have a difficult time with being decisive...how do you account for this character flaw?"
I actually chuckled a bit at her first question, but I answered it by re-asserting it as a strength and I stuck to that tactic with the rest of her questions, which seemed to work since I was eventually accepted. Crazy interview though