Ais a 1965 short film animated by Jan Lenica. It involves a writer tormented by a giant letter "A". He frees himself from the "A" only to encounter a "B". It began production in late 1965 and premiered at the Oberhausen Film Festival in February 1965. Unlike most other Jan Lenica films, it was never uploaded anywhere on the Internet, available for download, or seen on television in Europe or anywhere else. Only two physical prints of the movie were known to even exist, one belonging to Harvard Films, which was once shown at their annual Harvard University Film Festival. The film was considered lost until it was found as a part of an episode of Screening Room (1973) and uploaded to YouTube in 2016.