Greenberg

Ben Stiller

Roger Greenberg

Greta Gerwig

Florence Marr

Rhys Ifans

Ivan Schrank

Jennifer Jason Leigh

Beth (Beller's Party)

Mark Duplass

Eric Beller (Beller's Party)

Merritt Wever

Gina

Chris Messina

Phillip Greenberg

Brie Larson

Sara

Juno Temple

Muriel

Susan Traylor

Carol Greenberg

Mina Badie

Peggy

Zach Chassler

Marlon

Chris Coy

Guy at Gallery

Norizzela Monterroso

Female Vet

Jake Paltrow

Johno (Beller's Party)

Blair Tefkin

Megan (Beller's Party)

Dave Franco

Rich (Sara's Party)

Max Hoffman

Jerry (Sara's Party)

Ramona Gonzalez

Anita (Sara's Party)

Alessandra Ford Balazs

Olivia (Sara's Party)

Layla Delridge

Girl with Beer (Sara's Party)

Koby Rouviere

Greenberg Boy

Sydney Rouviere

Greenberg Girl

Emily Lacy

Gallery Band Member

Aaron Wrinkle

Gallery Band Member

Heather Lockie

Gallery Band Member

Charlotte Vida Silverman

Beller's Daughter (Beller's Party)

Nicole Luizzi

Vet Receptionist

Luke Clements

Guitarist

Alfredo Marin

Bus Boy

Jeremy Barber

Musso and Frank's Patron

Anna Culp

Musso and Frank's Patron

Erica Huggins

Musso and Frank's Patron

Dale J.E. Herbert II

Musso and Frank's Patron

Robert N. Wolfe

Male Vet

Trace Webb

Victor

Jessica Mills

Second Vet Receptionist

Maria Snow

Nurse

Nick Nordella

Kid at Stereo (Sara's Party)

Trent Gill

Kid at Stereo (Sara's Party)

Emily Kuntz

Guest (Sara's Party)

Zosia Mamet

Guest (Sara's Party)

Zoe Di Stefano

Guest (Sara's Party)

Cole M. Grief-Neil

Guest (Sara's Party)

Micah Schaffer

Guest (Sara's Party)

Sophie Savides

Musso and Frank's Patron

Megan Helbing

Guest - Sara's Party (uncredited)

Meghan Keeler

Drunk Party Guest (uncredited)

Meegan Michel

Party Guest (uncredited)

Danny Minnick

Musso and Frank's Patron (uncredited)

Desira Pesta

Coked Party Girl (uncredited)

Karen Strong

Party Girl (uncredited)

Sandra Valladares

Musso and Frank Patron (uncredited)

Carla Vila

Party Girl (uncredited)