So David Duchovny has entered rehabilitation facility for sex addiction, which re-contextualizes this story about sauna sex, shared by wife Téa Leoni, in a very interesting way. The 48-year-old actor, who appeared in The X Files: I Want to Believe earlier this summer, also plays a sex-obsessed character on the Showtime series Californication, which recently earned Emmy nominations for casting and cinematography, and begins its second season in just under a month.