THE X-FILES star David Duchovny is returning to television as a single father who is battling an addiction to sex and drugs. The actor will also serve as executive producer on the as-yet-untitled project for US network Showtime. If the project is picked up to series, it will be Duchovny's first regular TV role since The X-Files wrapped in 2000. The actor is also working on a second project with Showtime, the comedy series YOGA MAN, described as Shampoo in a yoga studio. Duchovny is writing the pilot script with Bart Freundlich, who directed him in the feature TRUST THE MAN.