iTunes Movie Trailers

Why would I want to watch movie trailers in iTunes ? When I heard that movie trailers had been added to ITMS, I thought it was a pretty useless thing to do, but harmless. Now, in order to watch the fullscreen version of the trailer for The Incredibles, you have to go to ITMS. My main objection to movie trailers in ITMS is that they aren't listed in any meaningful manner. The trailer organization on the Apple movie trailers website is much more coherent.