 | Greg Kinnear als Richard Hoover |
 | Toni Collette als Sheryl Hoover |
 | Steve Carell als Frank Ginsberg |
 | Paul Dano als Dwayne Hoover |
 | Abigail Breslin als Olive Hoover |
 | Alan Arkin als Edwin Hoover |
 | Bryan Cranston als Stan Grossman |
 | Beth Grant als Nancy Jenkins |
 | Wallace Langham als Kirby |
 | Matt Winston als Pageant MC |
 | Julio Oscar Mechoso als Mechanic |
 | Marc Turtletaub als Doctor #1 |
 | Jill Talley als Cindy |
 | Brenda Canela als Diner Waitress |
 | Chuck Loring als Convience Store Proprietor |
 | Justin Shilton als Josh |
 | Gordon Thomson als Larry Sugarman |
 | Steven Christopher Parker als Teen Boy #1 |
 | John Walcutt als Doctor #2 |
 | Paula Newsome als Linda |
 | Dean Norris als State Trooper McCleary |
| Lauren Shiohama als Miss California |
 | Mary Lynn Rajskub als Pageant Assistant Pam |
| Jerry Giles als Funeral Home Worker |
 | Geoff Meed als Biker Dad |
| Joan Scheckel als Judge |
 | Mel Rodriguez als Officer Martinez |
| Casandra Ashe als Girl in Hallway |
| Alexandria Alaman als Pageant Contestant |
| Alissa Anderegg als Pageant Contestant |
| Brittany Baird als Pageant Contestant |
| Cambria Baird als Pageant Contestant |
| Brenae Bandy als Pageant Contestant |
| Kristen Holaas als Pageant Contestant |
| Maliah Hudson als Pageant Contestant |
| Destry Jacobs als Pageant Contestant |
 | Lindsey Jordan als Pageant Contestant |
| Shane Murphy als Pageant Contestant |
 | Annabelle Roberts als Pageant Contestant |
| Sydni Stevenson-Love als Pageant Contestant |
| Nicole Stoehr als Pageant Contestant |
| Lauren Yee als Pageant Contestant |
| Terry Bolo als Pageant Worker (uncredited) |
| Jonathan Dayton | Director |
| Valerie Faris | Director |
| Albert Berger | Producer |
| David T. Friendly | Producer |
| Peter Saraf | Producer |
| Marc Turtletaub | Producer |
| Ron Yerxa | Producer |
| Tim Suhrstedt | Director of Photography |
| Pamela Martin | Editor |
| Justine Arteta | Casting |
| Kalina Ivanov | Production Design |
| Alan E. Muraoka | Art Direction |
| Melissa M. Levander | Set Decoration |
| Nancy Steiner | Costume Design |
| Michael Arndt | Writer |
| Michael Beugg | Executive Producer |
| Jeb Brody | Executive Producer |
| Bart Lipton | Associate Producer |
| Lyn Matsuda Norton | Script Supervisor |
| Suzanne C. Swindle | Script Supervisor |
| Michyl-Shannon Quilty | Production Coordinator |
| Theresa Greene | Art Department Coordinator |
| Bob Dohrmann | Production Supervisor |
| Michael Beugg | Unit Production Manager |
| Eric Lee | Still Photographer |
| Lawrence Karman | Steadicam Operator |
| Jeffrey Greeley | Camera Operator |
| Stephen P. Robinson | Supervising Sound Editor |
| Andrew DeCristofaro | Supervising Sound Editor |
| Rick Ash | Sound Re-Recording Mixer |
| Terry Rodman | Sound Re-Recording Mixer |
| Steve Nelson | Sound Effects Editor |
| Craig Dollinger | Boom Operator |
| Thomas Robinson Harper | Stunt Coordinator |
| Kim Davis-Wagner | Casting |
| Susan Jacobs | Music Supervisor |
| Anne Litt | Music Supervisor |
| Marguerite Pomerhn Derricks | Choreographer |
| Christopher Miller | Location Manager |
| Robin McMullan | Costume Supervisor |
| Torsten Witte | Makeup Department Head |
| Janis Clark | Hair Department Head |
| Susan Carol Schwary | Key Hair Stylist |
| Dugg Kirkpatrick | Key Hair Stylist |
| Cate Engel | Casting Associate |
| Mike Revell | Production Accountant |
| Geno Hart | Transportation Coordinator |
| Adam Pinkstaff | Transportation Captain |
| Angel DeSanti | Transportation Co-Captain |
| Michael Toji | Post Production Supervisor |
| Diane Marshall | Foley |
| Joshua Winget | Music Editor |
| Lee Wimer | Color Timer |
| Adam Avitabile | Visual Effects Supervisor |
| Joshua D. Comen | Visual Effects Producer |
| Amy Lederman | Makeup Artist |
| Thomas Patrick Smith | First Assistant Director |
| Michael Klingerman | Leadman |
| Kerry Ann Carmean | Foley Editor |
| Nancy Nugent | Supervising ADR Editor |
| Jenny Foster | Visual Effects Coordinator |
| Matt Bardocz | Best Boy Electric |
| Tom Boyd | Underwater Camera |
| Carlos M. Gallardo | Dolly Grip |
| Paul Goodstein | Key Grip |
| Heather Lea | First Assistant Camera |
| Paul McIlvaine | Gaffer |
| Jennifer Starzyk | Key Costumer |
| Cecilia Cardwell | Studio Teachers |
| John C. Stuver | Dialogue Editor |
| Tony Bonaventura | Property Master |
| Mychael Danna | Original Music Composer |
| Steven Morrow | Sound Mixer |
| DeVotchKa | Original Music Composer |
| Angel Radefeld | Key Makeup Artist |
| Nicole Sortillon Amos | Makeup & Hair Assistant |
| Heather Anderson | Additional Second Assistant Director |
| Kate Greenberg | Second Second Assistant Director |
| Gregory J. Smith | Second Assistant Director |
| Ellis J. Barbacoff | Assistant Property Master |
| Robert Cook | Painter |
| Joseph Kevin Garcia | Swing |
| Rich Murray | Assistant Art Director |
| Christopher Pappas | On Set Dresser |
| Ryan Wylie | Props |
| Gregg Barbanell | Foley Artist |
| Patrick Cusack | Assistant Sound Editor |
| Larry Hopkins | Sound Mixer |
| Stacey Michaels | ADR Mixer |
| Christopher Sidor | Sound Mix Technician |
| Lucy Sustar | Foley Mixer |
| Greg Zimmerman | ADR Recordist |
| Ian Eyre | Special Effects Technician |
| Chad Buehler | Digital Compositor |
| Steve Rodriguez | Colorist |
| Clay Cullen | Stunt Double |
| Traci Richelle Harrison | Stunts |
| Thomas Bango | First Assistant Camera |
| Brian Cantrell | Electrician |
| Theda Cunningham | First Assistant "A" Camera |
| Greg Dellerson | Assistant Camera |
| Josh Denering | Key Rigging Grip |
| Keith A. Hascher | Lighting Technician |
| Jimi Johnson | Video Assist Operator |
| Frederick Lawrence | Grip |
| Christopher Mack | First Assistant Camera |
| Michelle Pizanis | Clapper Loader |
| Chris J. Rossi | Best Boy Grip |
| Barbara Harris | ADR Voice Casting |
| Bethany Bernhard | Set Costumer |
| Edward Gould | Costumer |
| Ian Elias | Post Production Assistant |
| Terel Gibson | First Assistant Editor |
| Jessica Otto | Post Production Assistant |
| Mark Todd Osborne | Additional Colorist |
| Dan Milner | Location Scout |
| Brad Haehnel | Scoring Mixer |
| Joseph Aroesti | Transportation Co-Captain |
| Dillan Esco | Driver |
| Marty Osborne | Picture Car Coordinator |
| Erik Bright | Unit Publicist |
| Thomas Farr | Payroll Accountant |
| Jennifer Zolten Freed | Post Production Accountant |
| Shaun Greenspan | Production Assistant |
| Erick Kwiecien | Intern |
| Charissa McLain | Assistant Production Coordinator |
| Sara Pollack | Production Executive |
| Bryan Yaconelli | First Assistant Accountant |
| James Everett Dayton | Thanks |
| Kacie Borrowman | Stunt Double |
| Michael Hugghins | Stunt Double |
| Christie Hayes | Stunt Double |
| Matthew Taylor | Stunt Double |
| Larry Rippenkroeger | Stunts |
| Riley Harper | Stunt Double |
