The Amazon Unbox video downloads store has thousands of DVD-quality TV shows, movies, and more for you to purchase or rent. You can search for Unbox videos anywhere on Amazon.com or you can go directly to our store at http://www.amazon.com/unbox/ and browse by TV channel, movie studio, category, or genre.
You can also discover new and interesting videos by watching previews. You will find a player at the top of the Unbox store which shows previews of our most popular videos. If you’d like to watch a preview of a specific movie or TV show, you’ll also find a preview player located at the top of the detail page for that video.
Source: Amazon Unbox