The CIA, like many other government agencies, declassifies documents (including films) occassionally and relocates them to the National Archives. Freedom-of-Information-Act sleuth Michael Ravnitsky was able to obtain the list of CIA films currently in the Archives. It contains many, many titles with historical import such as Brainwashing, How Free Should the Press be?, Psychology of Imprisonment, and Unidentified Flying Objects. The full list, almost 400 pages, along with details on requesting copies of the films is available at The Memory Hole.