Personal statement. Knock it out of the park and you will stand out.
Just ask Data...3.low/165 and Yale Law School Class of 2010.
You need more than just an awesome PS. Here's how Data got into Yale with a 3.2/165:
1) Started a popular travel website.
2) Has a Masters degree with a 4.0 Grad GPA
3) Has a documented learning disability (ADD?)
4) Wrote about how he OVERCAME said disability to do #1&2 in his PS.
Basically, you need to be non-boring and accomplish more than your higher-scoring peers.