despite what popular opinion might think, the trucker hat trend did NOT get started by Ashton Kutcher. Pharrell Williams of the Neptunes/N.E.R.D. was sporting trucker hats way before Ashton did.
Also seen in conjunction with vans shoes, tight jeans and a megadeth t-shirt from 1986. Popular brands include Independent and Black Label.
see also: "von dutch", "john deere" or "ashton kutcher" for further clarification.