Ryan Gosling

Character: David Marks

Kirsten Dunst

Character: Katie Marks

Frank Langella

Character: Sanford Marks

Lily Rabe

Character: Deborah Lehrman

Philip Baker Hall

Character: Malvern Bump

Michael Esper

Character: Daniel Marks

Diane Venora

Character: Janice Rizzo

Nick Offerman

Character: Jim McCarthy

Kristen Wiig

Character: Lauren Fleck

Stephen Kunken

Character: Todd Fleck

John Cullum

Character: Richard Panatierre

Maggie Kiley

Character: Mary McCarthy

Liz Stauber

Character: Sharon McCarthy

Marion McCorry

Character: Ann McCarthy

Mia Dillon

Character: Katie's Aunt

Tom Kemp

Character: Katie's Uncle

Trini Alvarado

Character: Sarah Davis

Tom Riis Farrell

Character: Barry Davis

Bruce Norris

Character: Brian Callender

Francie Swift

Character: Kelly Callender

David Margulies

Character: Mayor

Glenn Fleshler

Character: Sidney Greenhaus

Stephen Singer

Character: Solly Sachs

Francis Guinan

Character: Daniel Patrick Moynihan

Ellen Sexton

Character: Moynihan's Wife

William Jackson Harper

Character: Moynihan's Assistant

Ashlie Atkinson

Character: Bonnie Felder

Donna Bullock

Character: Divorce Attorney

Pamala Tyson

Character: Lula Baxter

Julie Moran

Character: Julie Moran

Diane Kagan

Character: Scream Therapist

Socorro Santiago

Character: Nurse

Barbara Ann Davison

Character: Woman at Baby Shower

Zabryna Guevara

Character: Waitress

Lanny Flaherty

Character: Rooming House Landlord

Robert Clohessy

Character: Building Superintendent

Lázaro Pérez

Character: Building Elevator Operator

Michelle Hurst

Character: Newscaster

Craig Walker

Character: Assistant District Attorney

Lola Pashalinski

Character: Woman at Luxor

Jerry Grayson

Character: Man at Luxor

Tony Torn

Character: Theater Manager

Zoe Lister-Jones

Character: Press Conference Reporter

Tristan Comeau

Character: Young David

Amelia Martin

Character: David's Mother

Matthew Floyd Miller

Character: Young Sanford

Peter Becerra

Character: Officer at Search

Mary A. Kelly

Character: Vermont Realtor

Jeong Kim

Character: Waiter at Disco

Andy Tsay

Character: Waiter

Ruel Jusi

Character: Butler

Arwen

Character: Ivan the Dog