For a complete list and description of every film shown, with info on those available for purchase or download,click on the CCFF logo at left.
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The name of the film is "Lucie a zázraky", called "Lucy and the Miracles" on the CCFF. Here is a clip, the part you remember is at the 3:15 mark: https://www.youtube.com/watch?v=2gqvFJbA6VQ