Is there a site anywhere where I can download movie previews? I've been using Yahoo, which forces it to play while downloading and does not have a 'save' option. This results in a choice between jerky or low-rez playback. I would like very much to view a decent preview for new movies without sacraficing quality and I don't mind waiting a feww minutes to see it. Anyone have a suggestion? I have a low-level broadband connection. Thanks.