I put sport suspension parts on the left side of the car, and base/active stuff on the right to give the car a subtle 'gangsta lean to the left.' Makes it a little more natural feeling to lean my head on the door while I cruise.
Once I save up some money, I'm thinking about doing this RIGHT and putting some airbags on the left (
like dguzzardo22), and rally suspension stuff on the right (
like DaveKern). That'll be some sweet, sweet leanin'.
Seriously though... I'm short, so I've got the seat a little higher than most folks probably do. That's mostly to better see out the back. If I recall, I've got the fore-aft set so that my wrist touches the steering wheel and I can comfortably reach the A/C & radio controls.