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Pat O'Neill is an American independent experimental filmmaker and artist who has also worked in the special effects industry. Although his work embraces an extremely wide technical and aesthetic scope, he is perhaps best known for his startling, surrealistic, and humorous film compositions achieved through a mastery of the optical printer. His films and other artworks often reveal a complex and mysterious interest in the connections and clashes between the natural world and human civilization. O'Neill has also produced a prodigious body of work in drawing, collage, sculpture, installation, and many other media.