Background: Top 3 / 4(I don't know, people argue about that) BA, MA in computer science,GPA 3.3. GMAT 730, Tofel 110, dedicated extra-curriculum for environment preservation.
I don't think I have a superb profile, comparing to a lot of real star players. My only word of advice to people who determined to pursue an MBA:
Know your school and love it (or at least persuade yourself into doing so). I did my homework and found that I really liked the style of Booth. And I tried my best to demonstrate it in my essays. The feeling was so strong that I was not able to get the same excitement for other schools - which, as a side-effect, lead to the fact that my application for Wharton got dinged even without an interview. And I saw it coming...my Chicago essays were way better, and even went slightly emotional.
Adcoms will know you love their school, and that's what makes them like you.