you know, its funny you should bring this topic up. even though my reply might not have an inch of relevance, i'm going to put it out there anyway.
only just recently (past couple of weeks) i've noticed that when i drive off from a set of traffic lights when stationary, the front left of my vitara lifts first. its more so when medium acceleration is used rather than hard acceleration.
i've put it down to the direction the motor (crank) spins. i've read a few other articles on this similar topic, which mentions going up an acsent, such as a hill, and half way up there's an obstacle, if you go around on the right of the obstacle, the car is stable, but if you go left around the obstacle, the car has a tendancy to roll, or something like that. don't hold me to it though.
another place that i see it often, is in drag cars/street drag cars, which have a rotary engine in them. when they launch, its always the front left (i think) that lifts.
i've also experienced this on a motor bike, a BMW, which had a flat twin, (cylinders are parallel to the ground). so when i was sitting on it, and revved it, the bike wanted to tip over to one side.
so, maybe it's because of the direction the engine is spinning.
i don't know either, so if anyone has an answer, please let up know.
steve