Steve Martin

George Banks

Diane Keaton

Nina Banks

Martin Short

Franck Eggelhoffer

Kimberly Williams-Paisley

Annie Banks-MacKenzie

George Newbern

Bryan MacKenzie

Kieran Culkin

Matty Banks

BD Wong

Howard Weinstein

Peter Michael Goetz

John MacKenzie

Kate McGregor-Stewart

Joanna MacKenzie

Jane Adams

Dr. Megan Eisenberg

Eugene Levy

Mr. Habib

Rebecca Chambers

Young Woman at Gym

April Ortiz

Olivia

Dulcy Rogers

Ava (the Beautician)

Kathy Anthony

Beautician #2

Adrian Canzoneri

Justin

Lori Alan

Wife Mrs. Habib

Stephanie Miller

Annie Banks (Age 4)

Hallie Meyers-Shyer

Annie Banks (Age 7)

Jay Wolpert

Dr. Brooks

Ann Walker

Dr. Brooks' Nurse

Sandra Silvestri

Jogging Mom

William Akey

Frantic Father #1

Jonathan Emerson

Frantic Father #2

Seth Kaplan

Wild Four-Year-Old

Joshua Duvall Preston

Tantrum Toddler

K.C. Colwell

Father Heading off to Work

Chase Colwell

Adorable Toddler

Tony Simotes

Construction Foreman

Annie Meyers-Shyer

Shower Guest

Linda DeScenna

Shower Guest

Heidi Averill

Shower Guest #2

Chelsea Lynn

Matty's Friend

Sue Colwell

Nina's Customer

Rodrigo Botero

Gang Kid

Vince Lozano

Gang Kid #2

Caroline Lagerfelt

Check-In Nurse

Ilene Waterstone

Check-In Nurse #2

Wendy Worthington

Prostate Nurse

Dorian Spencer

ER Nurse

Harris Laskawy

Prostate Doctor

Roxanne Beckford

Nina's Nurse

Valerie Hemmerich

Nina's Nurse #2

Peter Spears

Dr. Wagner

Susan Beaubian

Annie's Nurse

Mychael Bates

Hospital Orderly

Jerri Rose White

Newborn Megan Banks

Shannon Kennedy

Newborn Megan Banks

Casey Boersma

Newborn George Banks-MacKenzie

Katie Pierce

Two-Month-Old Megan Banks

Dylan Boersma

Newborn George Banks-MacKenzie

Jonathan Selstad

Two-Month-Old George Banks-MacKenzie

Thomas Selstad

Two-Month-Old George Banks-MacKenzie

Christian Boeving

Gym Trainer (uncredited)

Nora Dunn

Realtor (uncredited)

David Novak

Man in Gym (uncredited)

Kylie Travis

Girl in Car (uncredited)