Mark Ruffalo as Michael Rezendes

Michael Keaton as Walter 'Robby' Robinson

Rachel McAdams as Sacha Pfeiffer

Liev Schreiber as Marty Baron

John Slattery as Ben Bradlee, Jr.

Brian d'Arcy James as Matt Carroll

Stanley Tucci as Mitchell Garabedian

Elena Wohl as Barbara

Gene Amoroso as Steve Kurkjian

Doug Murray as Peter Canellos

Sharon McFarlane as Helen Donovan

Jamey Sheridan as Jim Sullivan

Neal Huff as Phil Saviano

Billy Crudup as Eric Macleish

Robert B. Kennedy as Court Clerk Mark

Duane Murray as Hansi Kalkofen

Brian Chamberlain as Paul Burke

Michael Cyril Creighton as Joe Crowley

Paul Guilfoyle as Peter Conley

Michael Countryman as Richard Gilman

Tim Whalen as Young Cop

Martin Roach as Cop in Coffee Shop

Brad Borbridge as Sports Editor

Don Allison as Bishop

Patty Ross as Linda

Paloma Nuñez as Garabedian's Receptionist

Robert Clarke as Judge Volterra

Gary Galone as Jack Dunn

David Fraser as Jon Albano

Paulette Sinclair as Receptionist at Judge's Chambers

Laurie Heineman as Judge Sweeney

Elena Juatco as Guest List Woman

Nancy Villone as Maryetta Dussourd

Wendy Merry as Female Editor

Siobhan Murphy as Intern

Eileen Padua as Sacha's Grandmother

Darrin Baker as Middle Age Priest at St. Peter's

Brett Cramp as Middle Aged Man

Joe Stapleton as Older Cop

Maureen Keiller as Eileen McNamara

Jimmy LeBlanc as Patrick McSorley

Tim Progosh as Principal Bill Kemeza

Neion George as Waiter at Gala

Laurie Murdoch as Wilson Rogers

Zarrin Darnell-Martin as Intern Wanda

Krista Morin as Young Reporter

Paula Barrett as Jim's Wife

Mairtin O'Carrigan as Stewart

Rob deLeeuw as Herald Reporter Quimby

Nancy E. Carroll as Jane Paquin

Anthony Paolucci as Kevin

Michele Proude as Lisa Tuite

Richard O'Rourke as Ronald Paquin

Len Cariou as Cardinal Law

Dennis Lynch as Clerk O'Brian

Stefanie Drummond as Sheila

Mark McGrinder as Weeping Man

Richard Fitzpatrick as Rectory Priest

Tom Driscoll as Disgruntled Man

Jeffrey Samai as Library Security

Moira Driscoll as Woman Interviewee

Forrest Weber as Angry Man

Doreen Spencer as Older Southie Woman

Janet Pinnick as Receptionist

Shannon McDonough as Receptionist

Shannon Ruth as Girl at Garabedian's

Daniel Ruth as Boy at Garabedian's

Jennifer Ruth as Mother at Garabedian's

Timothy Mooney as Bad Priest

Bruce-Robert Serafin as Boston Globe Security Guard

Donna Sue Jahier as Angry Man's Sister

Edward Brickley as Red Sox Announcer (voice)

Richard Jenkins as Richard Sipe (voice) (uncredited)

Elena Khan as Boston Reporter (uncredited)

Teresa Wilson as Maureen (uncredited)

Amy Whalen as Pedestrian (uncredited)

John Franchi as Pedestrian (uncredited)

Peter Lewis Walsh as Red Sox Fan (uncredited)

Lance Norris as Driver (uncredited)

Harold Rudolph as Lawyer (uncredited)

Colleen Kelly as Librarian (uncredited)