As the badge would indicate I am a little bit of both (shines his "Neutral" badge).
I'll use examples from ME1 so not to spoil ME2. I left the Rackni alive, didnt even try to talk to Saren, always gotten into a pissing contest with a Turian counselor, solved all the problems through intimidation or use of lethal force, but in the end chose to save the Council. Basically, I did good, but I pissed off/ threatened/ killed a whole lot of people along the way.
Had something like 75% Renegade, 25% Paragon.