19. Shaquille O'Neal

Favorite Car Type Or Make: Customs
Notable Cars: Superman Cadillac Escalade, Smart ForTwo convertible, stretched Lamborghini Gallardo

Sometimes you customize because you can, like Shaq's pimped-out Superman Cadillac Escalade. Other times, you customize because you have to -- like the custom windows, doors, and roof Shaq had installed in his Gallardo so all 7'1" of him could actually drive that whip.