I did a semester of Post-Bacc classes, mostly cuz I was a slacker in my undergrad, had a lowish gpa (3.0) and never got to know my professors. The cool thing was, I picked specifically to take classes with professors who were experts in the fields I wanted to study. And I explained this to the professors when classes started and they helped me prepare for grad level work and I got to know them and they got to know me. I feel a lot better going in to applications with this.... We'll see how it all plays out.