Hugh Grant as Samuel Faulkner

Julianne Moore as Rebecca Taylor

Tom Arnold as Marty Dwyer

Joan Cusack as Gail Dwyer

Jeff Goldblum as Sean Fletcher

Robin Williams as Dr. Kosevich

Mia Cottet as Lili

Joey Simmrin as Truman

Ashley Johnson as Shannon Dwyer

Alexa PenaVega as Molly Dwyer

Aislin Roche as Patsy Dwyer

Priscilla Alden as Older Woman

Edward Ivory as Older Man

James Brady as Bicyclist

Charles Martinet as Arnie

Brendan Columbus as Little Boy on Beach

Eleanor Columbus as Little Girl in Ballet Class #1

Anna Barnathan as Little Girl in Ballet Class #2

Zelda Williams as Little Girl in Ballet Class #3

Peter Bankins as Tow Truck Driver

Betsy Monroe as Bobbie

Ngaio Bealum as Sean's Friend #1

Cynthia Urquhart as Sean's Friend #2

Tim Moffett as Sean's Friend #3

Mia Liban as Sean's Friend #4

Kumar Singh as Sean's Friend #5

Amanda Girard as Praying Mantis

Val Diamond as Kosevich's Receptionist

Jerry Masan as Clown Outside Toy Store

Irene Columbus as Woman in Toy Store

Violet Columbus as Baby in Toy Store

Brittany Radcliffe as Child in Toy Store #1

Porscha Radcliffe as Child in Toy Store #2

Cody Dorkin as Child in Toy Store #3

Emily Gosnell as Child in Toy Store #4

Bradley Gosnell as Child in Toy Store #5

Kristin Davis as Tennis Attendant

Angela Hopkins as Ultrasound Receptionist

Emily Yancy as Dr. Thatcher

Hayley Rose Hansen as Baby in Ultrasound

Shawn Cady as Roller Blade Girl

George F. Mauricio as Moving Man

Paul Simon as Car Salesman

Frank P. Verducci as Car Lot Customer #1

Barbara Olson as Car Lot Customer #2

Morgan Miller as Kid Being Choked in Park

Carol DePasquale as Maternity Floor Receptionist

Bruce Devan as Doctor in Hallway

Cheryl Lee Thorup as Christine

Clarke Devereux as Emergency Attendant #1

Tommy Banks as Emergency Attendant #2

Susan Ilene Johnson as Delivery Room Head Nurse

Maureen McVerry as Pregnant Woman #1

Velina Brown as Pregnant Woman #2

Joy M. Cook as Pregnant Woman #3

Sue Murphy as Pregnant Woman #4

Lee Ann Manley as Pregnant Woman #5

Diane Amos as Rebecca's Nurse

Betsy Aidem as Gail's Nurse

Terence McGovern as Anesthesiologist

Geoff Bolt as Male Delivery Room Nurse

Gwen Holloway as Female Delivery Room Nurse