Tom Cruise
Frank T.J. Mackey
Philip Baker Hall
Jimmy Gator
Philip Seymour Hoffman
Phil Parma
Julianne Moore
Linda Partridge
William H. Macy
Quiz Kid Donnie Smith
John C. Reilly
Officer Jim Kurring
Melora Walters
Claudia Wilson Gator
Jeremy Blackman
Stanley Spector
Jason Robards
Earl Partridge
Melinda Dillon
Rose Gator
Alfred Molina
Solomon Solomon
Ricky Jay
Burt Ramsey / Narrator
Pat Healy
Sir Edmund William Godfrey / Young Pharmacy Kid
Neil Flynn
Stanley Berry
Rod McLachlan
Daniel Hill
Allan Graf
Firefighter
Patton Oswalt
Delmer Darion
Brad Hunt
Craig Hansen
Jim Meskimen
Forensic Scientist
Chris O'Hara
Sydney Barringer
Clement Blake
Arthur Barringer
Jim Ortlieb
Middle-Aged Guy
Thomas Jane
Young Jimmy Gator
Michael Bowen
Rick Spector
Veronica Hart
Dentist Nurse #1
James Kiriyama-Lem
Dr. Lee
Cleo King
Marcie
Don McManus
Dr. Landon
Michael Shamus Wiles
Captain Muffy
April Grace
Gwenovier
John S. Davies
Cameraman
Kevin Breznahan
Geoff, Seminar Guy
Miguel Pérez
Avi Solomon
Neil Pepe
Officer #1
Lionel Mark Smith
Detective
Annette Helde
Coroner Woman
Felicity Huffman
Cynthia
Scott Burkett
WDKK Page #1
Danny Wells
Dick Jennings
Eileen Ryan
Mary
Meagen Fay
Dr. Diane
Luis Guzmán
Luis
Orlando Jones
Worm
Henry Gibson
Thurston Howell
Natalie Elizabeth Marston
Julia
Clark Gregg
WDKK Floor Director
Matt Gerald
Officer #2
Paul F. Tompkins
Chad (voice)
Mary Lynn Rajskub
Janet (voice)
Jim Beaver
Smiling Peanut Patron #1
Ezra Buzzington
Smiling Peanut Patron #2
Michael Murphy
Alan Kligman Esq.
Robert Downey Sr.
WDKK Show Director
William Mapother
WDKK Show Director's Assistant
Lillian Adams
Donnie's Old Neighbor
Dale Gibson
Paramedic #3
Scott Alan Smith
E.R. Doctor
Paul Thomas Anderson
Man Confiscating Sign (uncredited)
Miriam Margolyes
Faye Barringer (uncredited)
Robert Bella
Detective #2 (uncredited)
Greg Bronson
Waiter (uncredited)
Phil Hawn
Bob (uncredited)
Spencer Kayden
Seminar Patron (uncredited)
Aimee Mann
Hot Date Infomercial (uncredited)
Tom Ohmer
Detective (uncredited)
Aris Doganis
Gameshow Audience Member (uncredited)
Genevieve Zweig
Mrs. Godfrey
Mark Flanagan
Joseph Green
Raymond 'Big Guy' Gonzales
Reno Security Guard
Frank Elmore
1958 Detective
John Kraft Seitz
1958 Policeman
Cory Buck
Young Boy
Tim Soronen
Infomercial Guy
Holly Houston
Jimmy's Showgirl
Benjamin Niedens
Little Donnie Smith
Missy Spell Tanner
Dentist Nurse #2
Jake Cross
Pedestrian #1
Charlie Scott
Pedestrian #2
Juan Medrano
Nurse Juan
John Pritchett
Police Captain
Jason Andrews
Doc
David Masuda
Coroner Man
Emmanuel Johnson
Dixon
Lynne Lerner
Librarian
Bob Brewer
Richard's Dad
Julie Brewer
Richard's Mom
Nancy Marston
Julia's Mom
Maurey Marston
Julia's Dad
Jamala Gaither
WDKK P.A.
Amy Brown
WDKK Page #2
Patricia Forte
Mim
Patrick Warren
Todd Geronimo
Virginia Pereira
Pink Dot Girl (voice)
Craig Kvinsland
Brad the Bartender
Patricia Scanlon
Cocktail Waitress
Bobby Brewer
Richard
Art Frankel
Old Pharmacist
Guillermo Melgarejo
Pink Dot Guy
Denise Woolfork
Smiling Peanut Patron #3
New World Harmonica Trio
Harmonica Players
Larry Ballard
WDKK Medic
Brett Higgins
Mackey Disciple Twin #1
Brian Higgins
Mackey Disciple Twin #2
Michael Lee Phillips Jr.
Mackey Disciple in Middle
Steven Bush
Paramedic #1
Mike Massa
Paramedic #2
Bruno Angelico
Fireman #2 (uncredited)
Douglas Busby
Extra (uncredited)
Marc Davies
Seminar Attendee #1 (uncredited)
Bruce Gregory
Randy (uncredited)
Brian Kehew
Seminar Patron (uncredited)
Michael Laren
Officer Tom 1958 (uncredited)
Colleen Pelletier
Gameshow Audience Member (uncredited)
Herb Santos Jr.
21 Dealer (uncredited)
Tom Tangen
Drunken Dart Player (uncredited)