Rainn Wilson
Fish
Christina Applegate
Kim
Teddy Geiger
Curtis
Josh Gad
Matt
Emma Stone
Amelia
Jeff Garlin
Stan
Jane Lynch
Lisa
Jason Sudeikis
David Marshall
Will Arnett
Lex
Howard Hesseman
Gator
Fred Armisen
Kerr
Bradley Cooper
Trash
Lonny Ross
Sticks
Jon Glaser
Billy
Jane Krakowski
Carol
Samantha Weinstein
Violet
Demetri Martin
Kip
Aziz Ansari
Aziz
Ellie Knaus
Erica
Laura de Carteret
Amelia's Mom
Steve Adams
Amelia's Dad
Mark Forward
Leon
Vik Sahay
Gary
Brittany Allen
I Love Matt Girl
Jonathan Malen
Jeremy
Rebecca Northan
Jeremy's Mother
Keir Gilchrist
Moby Type Kid
Simon Sinn
Mr. Lee
SuChin Pak
SuChin Pak
Ennis Esmer
Barney
Nicole Arbour
Trashy Groupie
Wesley Morgan
Prom King Josh
Tanya Bevan
Prom Queen Jennifer
Marvin Karon
School Principal
Sandi Ross
Ms. Kopelson
Talia Russo
Amy
Jon Cor
Paul
Brian Gordon
Tattooed Drummer
Darrel Gamotin
Beat Box Kid
Angela Maiorano-Thurston
Frazzled Stylist
Nick Spencer
Harry
Allan Roberto
Max
Patrick Hagarty
Gund Arena PA (voice)
Jessica Porter
Desk Sergeant
Dave Kiner
Reedy Rocker Guy
Guy Sanvido
Old Barber
Tiffany Boychuk
Boost Mobile Girl
Christian Potenza
Dry Engineer
Pete Best
Pete Best
Jordan Lawson
Crazy Fan (uncredited)