Brad loves Tony Stewart. Once when there was a delay of some sort in the middle of a race, Mark Martin was sitting on the inside retaining wall eating a sandwich. Tony was with him. One of the reporters asked Tony if he was going to take advantage of the delay and eat too. He responded with "Just because I'm a fat kid doesn't mean I have to eat all the time". Brad has loved him ever since for his sarcasm. (There was also a short period of time where his company sponsored Tony, so he got to talk to him for a short bit and got his autograph when Tony visited the plant). It was pretty cool for him.
But, back to the whole body weight thing... left side weight is kind of a good thing - keeps the left side on the ground when going around those corners to improve traction.