I Love You, Man

Paul Rudd

as

Peter Klaven

Jason Segel

as

Sydney Fife

Rashida Jones

as

Zooey Rice

Andy Samberg

as

Robbie Klaven

J.K. Simmons

as

Oswald Klaven

Jane Curtin

as

Joyce Klaven

Jon Favreau

as

Barry

Jaime Pressly

as

Denise

Rob Huebel

as

Tevin Downey

Thomas Lennon

as

Doug

Sarah Burns

as

Hailey

Lou Ferrigno

as

Lou Ferrigno

Greg Levine

as

Hailey's Date

Jean Villepique

as

Leanne

Kym Whitley

as

Female Co-Work...

Colleen Crabtr...

as

Female Co-Work...

Caroline Farah

as

Female Co-Work...

Mather Zickel

as

Gil

Aziz Ansari

as

Eugene

Nick Kroll

as

Larry

Liz Cackowski

as

Zooey's Friend

Kulap Vilaysack

as

Zooey's Friend

Catherine Reit...

as

Zooey's Friend

Carla Gallo

as

Zooey's Friend

Vicki Davis

as

Zooey's Friend

Josh Cooke

as

Alan (Bench Pr...

Jay Chandrasek...

as

Barry's Buddy

Seth Morris

as

Barry's Buddy

James P. Engel

as

Barry's Buddy

Jerry Minor

as

Berry's Buddy

Joe Lo Truglio

as

Lonnie (Voice ...

Murray Gershenz

as

Mel Stein

Keri Safran

as

JAR Waitress

Greg Tuculescu

as

Open House Cou...

Ian Roberts

as

Venice Broadwa...

Bob Cicherillo

as

Venice Boardwa...

Ethan S. Smith

as

Sidney's Buddy

Nelson Franklin

as

Sidney's Buddy

Ping Wu

as

Mr. Chu

Jill Bartlett

as

Woman Leaving ...

Matt Walsh

as

Impatient Golf...

Geddy Lee

as

Geddy Lee - Ru...

Alex Lifeson

as

Alex Lifeson -...

Neil Peart

as

Neil Peart - R...

Melissa Rauch

as

Woman Jogger Y...

David Wain

as

Wedding Photog...

Raquel Bell

as

Saks Fifth Ave...

Larry Wilmore

as

Justice Of The...

Dennis James A...

as

Hank Mardukas

Craig Wedren

as

Wedding Band

Damian Kulash

as

Wedding Band

Timothy Nordwi...

as

Wedding Band

Dan Konopka

as

Wedding Band

Andy Ross

as

Wedding Band

David Krumholtz

as

Sydney's Buddy...

Sidow Sobrino

as

Rush Concert F...