Karen Moncrieff Director, Writer Toni Collette Arden Actor Rose Byrne Leah Actor Mary Beth Hurt Ruth Actor Marcia Gay Harden Melora Actor Brittany Murphy Krista Actor Kerry Washington Rosetta Actor Piper Laurie Arden's mother Actor Giovanni Ribisi Rudy Actor James Franco Derek Actor Mary Steenburgen Beverley Actor Josh Brolin Tarlow Actor Nick Searcy Carl Actor Bruce Davison Bill Actor Eric Karten Producer Gary Lucchesi Producer Tom Rosenberg Producer Kevin Turen Producer Henry Winterstern Producer Eric Reid Executive Producer David Rubin Executive Producer Temple Williams Executive Producer Adam Gorgoni Original Music Michael Grady Cinematographer Toby Yates Film Editing Deborah Aquila Casting Jennifer L. Smith Casting Wendy Weidman Casting Mary Tricia Wood Casting Kristan Andrews Production Design Bryan Venegas Set Decoration Susie DeSanto Costume Design