Rosemarie DeWitt Explores Family Friction

NYTimes.com: As the title character in the film “Rachel Getting Married,” Rosemarie DeWitt played a bride who was constantly being upstaged by her emotionally damaged sister, a recovering addict. And on the Showtime series “United States of Tara,” Ms. DeWitt, again playing a sister, is even more marginalized by mental illness — by a factor of five, the number of attention-hogging alternate personalities of her younger sibling, Tara.