By Jennifer Armstrong
Updated April 20, 2009 at 05:19 PM EDT

Monica Potter has joined NBC’s burgeoning Parenthood pilot cast, according to The Hollywood Reporter. The TV adaptation of the 1989 hit film will follow four siblings — played by Peter Krause, Maura Tierney, Erika Christensen, and Dax Shepard — and their parents — played by Craig T. Nelson and, likely, Bonnie Bedella (who’s still in final negotiations). Potter will play Krause’s wife, stepping in for originally cast Diane Farr, who had a scheduling conflict with a recurring role on Showtime’s Californication. Sam Jaeger (Eli Stone) is also now set to play Christensen’s husband.