Superhydrophobic conducting polyaniline (PAni) films were electrochemically deposited in acetonitrile-H2O electrolyte containing aniline monomer and perfluorooctanesulfonic (PFOS) acid. The films exhibited an extended network structure composed of helical PAni sub-micron fibers. The helical fibrous structure is thought to form through a supermolecular templating process. The surface of the PFOS-doped PAni films showed a water contact angle of 153 degrees. Reducing the PFOS-doped PAni (in emeraldine salt form) by negative potential led to de-doped PAni films (in leucoemeraldine base form) which were superhydrophilic (water contact angle close to 0 degrees). By controlling the electrical potential, PAni films were changed between the doped state and de-doped state, resulting in reversibly switchable superhydrophobic and superhydrophilic surfaces.