Eric McCormack

Character: Mark

Rafer Weigel

Character: Robert

Audie England

Character: Claire

William Shatner

Character: Bill

Phil LaMarr

Character: Eric

Thomas Hobson

Character: Richard

Jennifer Sommerfeld

Character: Tricia

Jonathan Slavin

Character: Dan

Patrick Van Horn

Character: Sean

Lori Lively

Character: Leila

Holly Gagnier

Character: Laura Hafermann

Deborah Van Valkenburgh

Character: Marlena

Daniel Schweiger

Character: Schweiger

Carl Bressler

Character: Mort Berg

Joey D. Vieira

Character: Hal Pittman

Spencer Klein

Character: Young Robert

Ellie Cornell

Character: Suzanne Crawford

Diana Cignoni

Character: Illa

David Starzyk

Character: Brian

Amanda Ingber

Character: Munchkin Beth

Phyllis Franklin

Character: Ticket Taker

Ethan Glazer

Character: Young Mark

Stacy Rosman

Character: Beach Babe Bimbo

Brandon Kleyla

Character: Young Kevin

Marilyn Kentz

Character: Gail - Mark's Mom

Dick Burnett

Character: Dick the Bartender

Mickey Cassidy

Character: Bully

Tricia Cruz

Character: Mexican Waitress (as Letricia Cruz)

Annika Brindley

Character: Astrid

Michael Altman

Character: Eden Waiter

E.C. Burke

Character: Eden Manager (as Eric Burke)

Andrea Evers

Character: Cartoonsville Waitress

Austin Bates

Character: Cartoonsville Boy

Dave Parker

Character: Parker

Shawn Pelofsky

Character: Jerry's Waitress

Keira De Anda

Character: Menage Girl

Mark A. Altman

Character: Cousin Ira

Mark Gottwald

Character: Groover

Michelle Meyer

Character: Outraged Patroness

Meika Cooper

Character: Cafe Hostess

Harry Werksman

Character: Harry

Gabrielle Stanton

Character: Gabrielle

Randy Callahan

Character: George

Alan Spencer

Character: Obsessed Fan

Daren Dochterman

Character: Tiberius

Dan Madsen

Character: Alexander

Jon Baker

Character: Rated's Back-Up Singer (as John Baker)

Freddie Rhone

Character: Rated's Posse

Keith Lawson

Character: Rated's Posse

Russell Young

Character: Andrew

Tyler Binkley

Character: Curly Blonde Kid

Jeff Bond

Character: Additional Voices (voice)

Lukas Kendall

Character: Additional Voices (voice)

Steven Melching

Character: Additional Voices (voice)

Melissa Pokorski

Character: Additional Voices (voice)

Paul Salamoff

Character: Additional Voices (voice)