Joseph Fiennes has signed on to star in the upcoming untitled FX series about a transsexual. According to Variety, Blythe Danner and Robert Wagner have also joined the one-hour drama.

Fiennes will star as Bob, a married man with two kids who decides to undergo a sex change operation. Wagner will play Bob's father Scotch. The two share a gynecological practice together. Danny will play Bunny, Bob's mother and Scotch's wife. Bob's wife and children have yet to be cast.

This will mark Fiennes first television series. The show is slated for production later this year for a 2008 premier date.