don't feel too overwhelmed or discouraged by applicants on SDN or at your interviews who have amazing #'s, a background that totally stands out in a good but strong way (i.e. a lawyer with a lovely wife and 3 beautiful children), and/or an Ivy League/high-profile education. it is totally possible for "ordinary" people to get into med school and to become good doctors.
keep in touch with schools to show your interest on a regular basis, but keep away from annoying daily phone calls and letters.
ladies: bring at least 2 pairs of pantyhose to the interview! I learned the hard way about this one.. and to both sexes, know where to get a replacement suit/outfit wherever you're interviewing in case of disasters with lost luggage, etc.
be yourself and be honest in the interview; interviewers don't tend to like people who sound robotic and rehearsed. For example, instead of saying something like, "oh, I'm too nice to people", or "I'm too caring" when asked your biggest flaw, be true to yourself and don't give the same BS answers that interviewers have heard all the time.
g'luck..