Can’t wait to see new movies? How about checking out the documentary films of their production first? A growing trend is for producers to release documentary online before the movies hit the cinemas.

Year-end hits like 1942 and Chinese Zodiac have let fans view behind the scenes on-line. In the 6-episode documentary series "1942: My Country, My People", director Feng Xiaogang sits down with screenwriter Liu Zhenyun, who wrote the novel the movie is based on.

And in "The Legend of the Dragon," the documentary film for Chinese Zodiac, Jackie Chan talks with the noted writer and collector Ma Weidu about antique protection and collection. The depth of such documentaries has proved to be very attractive to fans. They generate a lot of on-line traffic and are an effective PR tool.

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