Apple Trailers and wget
Apple has a great selection of movie trailers on their site. Recently they started blocking any access to the trailer files unless it was made by QuickTime/iTunes. If you change the user agent of wget you can still grab trailers.
wget -U QuickTime/7.6.2 http://movies.apple.com/movies/disney/tronlegacy/tronlegacy-vfx_concepttest_h720p.mov