 In September 1975, it was announced Peter Ustinov would play "the last man alive in Washington, D.C." in the film.Farrah Fawcett has a small role, but her rising celebrity in television earned her prominent credit as Farrah Fawcett-Majors.Special effects artists L. B. Abbott and Glen Robinson regarded Carrousel as the most difficult part of the film to portray, requiring hidden wires to depict the levitation.