Knocked Up

Seth Rogen

Ben Stone

Katherine Heigl

Alison Scott

Paul Rudd

Pete

Leslie Mann

Debbie

Jason Segel

Jason

Jay Baruchel

Jay

Jonah Hill

Jonah

Martin Starr

Martin

Lo Mutuc

Jodi

Iris Apatow

Charlotte

Maude Apatow

Sadie

Joanna Kerns

Alison's Mom

Harold Ramis

Ben's Dad

Alan Tudyk

Jack

Kristen Wiig

Jill

Bill Hader

Brent

Ken Jeong

Dr. Kuni

Craig Robinson

Club Doorman

Tim Bagley

Dr. Pellagrino

Loudon Wainwright III

Dr. Howard

Stephanie Mnookin

Dr. Howard's Nurse

Adam Scott

Samuel

J.P. Manoux

Dr. Angelo

Mo Collins

Female Doctor

B. J. Novak

Young Doctor

Tami Sagher

Wardrobe Lady

Brianna Brown

Alison's Friend

Catherine Reitman

Alison's Friend

Nick Thune

Alison's Friend

Paul Feig

Fantasy Baseball Guy

Ben Meyerson

Fantasy Baseball Guy

Wayne Federman

Fantasy Baseball Guy

Melinda Bennett

Dr. Pellagrino's Nurse

Matthew McKane

Club Bartender

Steven Brill

Ben's Boss

Ana Mercedes

Maria

Nadine Griffith

Maternity Nurse at Desk

Diane Schaller

Delivery Nurse

Emersen Riley

Jonah's Girlfriend

Stormy Daniels

Lap Dancer

Nautica Thorn

Lap Dancer

Mary Brill

Real Estate Agent

Lolita Mastrolia

Daughter in Waiting Room

Joseph T. Mastrolia

Father in Waiting Room

Tracy Hartley

Lamaze Instructor

Jeffrey L. Wilson

Record Store Customer

Jessica Alba

Self (uncredited)

Steve Carell

Self (uncredited)

Andy Dick

Self (uncredited)

James Franco

Self (uncredited)

Eva Mendes

Self (uncredited)

Ryan Seacrest

Self (uncredited)

Dax Shepard

Self (uncredited)

Michelle Woods

Waitress (uncredited)