I'm in the interview committee for my school. Basically, another set of medical students who've been in the interview committee before selected us. In a nutshell, I joined because I wanted to help out the students who are passionate to make it in, and help weed out those with the "wrong" attitudes and ideas of why they want to go into medicine. Don't get me wrong, I in no way suggest that I have an unparalleled ability to judge character, but honestly, I would rather have "me" in the committee (who's not out there to get you) rather than some others who just have power trips doing it.