Anna Paquin as Lisa Cohen

J. Smith-Cameron as Joan

Mark Ruffalo as Maretti

Jeannie Berlin as Emily

Jean Reno as Ramon

Sarah Steele as Becky

John Gallagher Jr. as Darren

Cyrus Hernstadt as Curtis

Allison Janney as Monica Patterson

Kieran Culkin as Paul

Matt Damon as Mr. Aaron

Stephen Adly Guirgis as Mitchell

Betsy Aidem as Abigail

Adam Rose as Anthony

Nick Grodin as Matthew

Jonathan Hadary as Deutsch

Josh Hamilton as Victor

Rosemarie DeWitt as Mrs. Maretti

Glenn Fleshler as 1st Man

Stephen Conrad Moore as 2nd Man

Gio Perez as Kid

Matthew Broderick as John

Jake O'Connor as David

David Mazzucchi as Lionel

Jerry Matz as Mr. Klein

Kevin Carroll as Mr. Lewis

Hina Abdullah as Angie

Olivia Thirlby as Monica

Kenneth Lonergan as Karl

Enid Graham as Bonnie

Brittany Underwood as Leslie

T. Scott Cunningham as Gary

Michael Ealy as Dave the Lawyer

Renée Fleming as Opera Singer

Susan Graham as Opera Singer 2

Adam LeFevre as Rob

Krysten Ritter as Salesgirl

Matt Bush as Kurt

Anna Berger as Neighborhood Lady #1

Rose Arrick as Neighborhood Lady #2

Pippen Parker as Opera Fan

Stephanie Cannon as Woman Mourner #1

Kevin Geer as AIG Detective #2

Kelly Wolf as Annette

Johann Carlo as Neighbor

Carlo Alban as Rodrigo

Christine Goerke as Opera Singer "Norma"

Liza Colón-Zayas as Nurse

Jason Pendergraft as Young Cop (Not Photographed)

Yves Abel as "Hoffman" Conductor