United States of Tara

Toni Collette Tara Gregson

John Corbett Max Gregson

Rosemarie DeWitt Charmaine

Keir Gilchrist Marshall Gregson

Brie Larson Kate Gregson

Michael J. Willett Lionel

Nate Corddry Gene Stuart

Patton Oswalt Neil

Griffin Gluck Monty

Hayley McFarland Petula

Stephanie Courtney Beth

Dan Bakkedahl Mr. Kern