Supermarionation a puppet hand, suspended by wires, operating the controls of "Thunderbird 1". The term "Supermarionation" was not coined until during production of later episodes of "Supercar". As a result, "Four Feather Falls" is often omitted from lists of Supermarionation productions. Two feature films based upon "Thunderbirds" were also made with Supermarionation: "Thunderbirds Are Go" (1966) and "Thunderbird 6" (1968). Numerous episodes of "Thunderbirds", "Captain Scarlet", and other series were also edited together (sometimes with the addition of new narration) to form movie-length features for VHS release and TV syndication in the 1980s. "The Secret Service" was actually a hybrid of
Filmed in Supermarionation stills photographer Doug Luke was interviewed for the documentary, but is neither on it nor the deleted scenes. Upon release, "Filmed in Supermarionation" was generally well received by critics writing across a wide range of publications. Peter Bradshaw of "The Guardian" gave the film four stars, writing that, "There is something very romantic about this success story of British entrepreneurial creativity." Rich Trenholm of CNET was similarly positive in stating, "the documentary's vibrant storytelling captures the vitality, innocence and sense of joy of the series themselves". Martin Townsend, in his New Year's editorial for "The Sunday Express", enthused, "The likes