Selma Blair

Vi

Leo Fitzpatrick

Marcus

Robert Wisdom

Mr. Scott

Aleksa Palladino

Catherine

Mark Webber

Scooby Livingston

Paul Giamatti

Toby Oxman

John Goodman

Marty Livingston

Jonathan Osser

Mikey Livingston

Lupe Ontiveros

Consuelo

Julie Hagerty

Fern Livingston

Noah Fleiss

Brady Livingston

Maria Thayer

Ami

Angela Goethals

Elli

Xander Berkeley

Mr. DeMarco

Devorah Rose

Lucy

Nancy Anne Ridder

Joyce

Steve Rosen

Ethan

Mary Lynn Rajskub

Melinda

Tina Holmes

Sue

Mike Schank

Mike the Cameraman

Jessica Dunphy

Cheryl

Nick Maltes

Esposito

Steve Railsback

Mr. Kirk

Crista Moore

Elizabeth St. Clair

Franka Potente

Toby's Editor

Andrew Marantz

Stanley

Conan O'Brien

Himself

Frederick B. Owens

Football Coach

Barry Jordan

Dr. Barry Jordan

Robin Goodman

Dr. Robin Goodman

Eric Nieves

Dave

Marisa Redanty

Onlooker #1

Ilana Levine

Onlooker #2

Jennifer Elise Cox

Musical Theatre Actress (uncredited)

Pat Kiernan

TV News Announcer (voice) (uncredited)

Gina Priano

Student (uncredited)

Tom Schimmels

Man in Toby's Apartment (uncredited)

Jim Titus

Football Player (uncredited)