That actually brings to mind a video I saw that was just two guys talking. He was sayng that a bodybuilder squat and a powerlifter squat are two different things. Apparently, a powerlifting squat has very little quad, whereas a BB is trying to stimulate the quads so it's done a bit differently. I'm looking for the powerlifting version.
One thing I noticed in a few Strength Feat videos is that when they are doing squats, knees stay forward when going down and just after they start to go up, some lifters will actually start to bring their knees in, like they are trying to use a stronger set of muscles to perform the lift. Anyone care to shed some light on this?