David Duchovny in sex addiction treatment

"X-Files" star David Duchovny, who currently plays a womanizing writer on the cable television series "Californication," said on Thursday he has entered a facility for treatment of sex addiction.Duchovny, 48, sprang to fame starring as the conspiracy-minded FBI agent Fox Mulder on Fox network's paranormal thriller "The X-Files," which spawned two big-screen spinoffs, one of which ran in theaters