Will Ferrell

Brennan Huff

John C. Reilly

Dale Doback

Mary Steenburgen

Nancy Huff

Richard Jenkins

Dr. Robert Doback

Kathryn Hahn

Alice

Andrea Savage

Denise

Adam Scott

Derek

Danielle Schneider

Receptionist

Lurie Poston

Tommy

Elizabeth Yozamp

Tiffany

Logan Manus

Chris Gardoki

Travis T. Flory

Redheaded Kid

Lili Rose McKay

7-Year-Old Girl

Shira Piven

Nurse

Seth Morris

Doctor

Wayne Federman

Blind Man

Maria Quiban

TV Anchor

Gillian Vigman

Pam Gringe

Brian Huskey

Interviewer

Adam McKay

Man without Glasses

Seth Rogen

Sporting Goods Manager

Chris Henchy

First Homebuyer

Mary Catherine Hamelin

First Homebuyer

Erica Vittina Phillips

Second Homebuyer

Phil LaMarr

Second Homebuyer

Rob Riggle

Randy

Ken Jeong

Employment Agent

Horatio Sanz

Lead Singer

Jason Davis

TJ

Kyle Felts

Wine Mixer Heckler

Paula Killen

Rental Agent

Jake Szymanski

Caterer

Matt Walsh

Drunk Corporate Guy

Krystal Ellsworth

Featured Dancer (uncredited)

Dmitri Schuyler-Linch

6-Year-Old Derek

Bryce Hurless

9-Year-Old Brennan

Brent White

Therapy Patient

Ian Roberts

Male Therapist

Don Abernathy

Upscale Businessman (uncredited)

Amanda Lee Jacoby

Student Back in the 80's (uncredited)

Denise Austin

Herself

Christopher Karl Johnson

Wedding Guest / Dancer (uncredited)

Michelle Lenhardt

Screaming Shopper (uncredited)

Tara Macken

High School Gymnast (uncredited)

Sandra Rosko

Middle School Kid (uncredited)

Henry Silva

Kurt Zagon (archive footage) (uncredited)

Gregg Lee

Featured awards ceremony guest

Gregg Lee

Wedding Guest