Jim Simpson Joan's Husband Director, Actor, Writer Sigourney Weaver Joan Actor Anthony LaPaglia Nick Actor Irene Walsh Joan's Sister Actor Charlotte Simpson Joan's Daughter Actor Julian Trompeter Joan's Son Actor Katharine Schreiber Sister's Daughter Actor Lucas DeBassac Sister's Son Actor Joshua Ross Sister's Infant Actor Shelita Birchett Masseuse Actor Ron Dortch Joan's Friend Actor Alfredo Narciso Diner Cashier Actor Julia Nelson Black Acolyte Actor David Nelson Black Acolyte Actor Jason Kliot Producer Joana Vicente Producer Anne Nelson Writer Edward R. Pressman Executive Producer John Schmidt Executive Producer Bonnie Timmermann Executive Producer Maryse Alberti Cinematographer Sarah Flack Film Editing Mychael Danna Original Music Susan Block Production Design Lucio Seixas Art Director Sarah Beers Costume Design