Michael Cera as Nick

Kat Dennings as Norah

Aaron Yoo as Thom

Rafi Gavron as Dev

Ari Graynor as Caroline

Alexis Dziena as Tris

Jonathan B. Wright as Beefy Guy (Lethario)

Zachary Booth as Gary

Jay Baruchel as Tal

Justin Rice as Bishop Allen

Christian Rudder as Bishop Allen

Giorgio Angelini as Bishop Allen

Darbie Nowatka as Bishop Allen

Cully Symington as Bishop Allen

Jeremy Haines as Randy (Are You Randy)

Sammy Marc Rubin as Sammy (Are You Randy)

Glenn Kubota as Korean Guy

Marika Daciuk as Ukrainian Waitress

Marcel Simoneau as Drunk Kid

Seth Meyers as Drunk Guy in Yugo

Lorene Scafaria as Drunk Girl in Yugo

Andy Samberg as Homeless Man

Billy Griffith as Switzerland

Ruth Maleczech as Homeless Caroline

Eddie Kaye Thomas as Jesus

Frankie Faison as Ticket Salesman

Marilyn McDonald as Janitor

John Cho as Hype Man

Kevin Corrigan as Man at Port Authority

John Cantwell as Nellie Olesons

Nora Burns as Nellie Olesons

Eric Bernat as Nellie Olesons

Toney Chem as Are You Randy Fan

Devendra Banhart as Customer in Deli

Steve Antonucci as Hipster (uncredited)

Joey Auzenne as Groupie (uncredited)

Joseph Basile as Running Partying Man on Street (uncredited)

Rachel Cohn as Veselka Diner Patron (uncredited)

Simon Dasher as Caroline's Admirer (uncredited)

Stephanie Ellis as Hipster (uncredited)

Natalia Fedner as Hipster Dancer (uncredited)

Cassidy Gard as Hipster (uncredited)

Joe Giorgio as Tal's Bandmate (uncredited)

Vanessa Hardy as Hipster (uncredited)

Mimi Imfurst as Drag Queen (uncredited)

Philip E Jones as Caroline's Admirer (uncredited)

Jonesy as Cute Bandboy (uncredited)

David Levithan as Veselka Diner Patron (uncredited)

Kelli Mandruk as Bartender (uncredited)

Lance R. Marshall as Hipster (uncredited)

The Nellie Olesons as Themselves (uncredited)

Frank Pelligra as Brooklyn Pool Bouncer (uncredited)

Adam S. Phillips as Bouncer (uncredited)

Nicole Pursell as Lesbian on Street (uncredited)

Sam Rocco as Hipster (uncredited)

R.J. Romano as Tal's Bandmate (uncredited)

Richard S. Sargent as Groupie (uncredited)

Jill Sayre as (voice) (uncredited)

Michelle Taylor as Bowery Ballroom Doorgirl (uncredited)

Kiki Valentine as Extra (uncredited)

Richard Waddingham as Norah's Father (uncredited)

Rachel Kiri Walker as Brooklyn Hipster (uncredited)

Bill Walters as Homeless at PABT (uncredited)

Justin Wood as Hipster (uncredited)

C. Vincent Woodhull as Hipster (uncredited)