Don't know if any one know, but it's cool and very easy. This allows you to actually download a HD trailer. Go to watch a HD trailer in Apple's trailer page. When you click on one of the size links, Quicktime launches and the movie begins to load. In Quicktime go under Window > Show Movie Info. This will bring up a box with detailed info. If you look at the source their is link to the trailer. Highlight and drag this to Safari's download window and bam, trailer downloads for you to keep. Pretty cool. Any way I thought I would share.