Kirsten Dunst as Betsy Jobs

Michelle Williams as Arlene Lorenzo

Dan Hedaya as President Richard M. Nixon

Will Ferrell as Bob Woodward

Bruce McCulloch as Carl Bernstein

Teri Garr as Helen Lorenzo

Dave Foley as Bob Haldeman

Jim Breuer as John Dean

Ana Gasteyer as Rose Mary Woods

Harry Shearer as G. Gordon Liddy

Saul Rubinek as Henry Kissinger

Devon Gummersall as Larry Jobs

Ted McGinley as Roderick

Ryan Reynolds as Chip

G. D. Spradlin as Ben Bradlee

Shannon Lawson as Kay Jobs

Karl Pruner as Frank Jobs

Brenda Devine as Mrs. Spindler

Jonathan Rannells as First G-Man

Paulino Nunes as Second G-Man

Michael Dyson as Burglar #1

Jerry Schaefer as Burglar #2

Jack Mosshammer as Fat Freddy

Karen Waddell as White House Secretary

Richard Fitzpatrick as John Erlichman

Cole Barrington as Student #1

Scott Wickware as White House Guard

Mark Lutz as Hunky Secret Service Man

Kedar Brown as Mr. Samovar

Paul Wildbaum as Shredder Man

Kerry Dorey as Payola Man

Len Doncheff as Leonid Brezhnev

Igor Portnoi as Russian Translator

Jennifer Wigmore as Washington Post Receptionist

Jane Moffat as Kissing Secretary

Rob Nickerson as 1st Police Officer

Bernard Browne as 2nd Police Officer

Rummy Bishop as Newsstand Guy

Deborah Grover as Pat Nixon

Stephen Jared as FBI Agent

Michael Eric Kramer as TV News Reporter

Mike Anscombe as TV News Anchor

French Stewart as The Interviewer

David Berni as Secret Service Agent (uncredited)

Barry Goldwater as Self (archive footage) (uncredited)

Michael Kaufman as Teen Tourist (uncredited)

Chad Ridgely as Hippy (uncredited)

Jade Wu as Tourist (uncredited)