Mark Ruffalo Dan Mulligan
Keira Knightley Gretta James
Hailee Steinfeld Violet Mulligan
Catherine Keener Miriam Hart
James Corden Steve
Aya Cash Jenny
Judd Apatow Producer
Yasiin Bey Saul
Rob Morrow CEO
Karen Pittman Business Woman
John Carney Director, Writer
Cee Lo Green Troublegum
Adam Levine Dave Kohl
Maddie Corman Phillis
Jimmy Palumbo Guy Shouting from Window
Simon Delaney Lawyer
Jeanne McCarthy Casting
Danielle Brisebois Songs, Singer
Anthony Bregman Producer
Keen Ruffalo Keen
David Pendleton Homeless Man
Arjun Bhasin Costume Design
Mary Catherine Garrison Jill
Nigel Sinclair Executive Producer
Drew Jiritano Special Effects Coordinator
Lewis Goldstein Sound Re-Recording Mixer, Supervising Sound Editor
Molly Smith Executive Producer
Tod A. Maitland Sound Mixer
Brian Smyj Stunt Coordinator
Matt Sullivan Music Supervisor
Andrea von Foerster Music Supervisor
Shannon Walsh Rachel
Kris Moran Set Decoration
David Abeles Glen
Stephanie DeCourcey Casting
Tobin Armbrust Producer
Ian Watermeier Co-Producer
Suzana Perić Music Editor
Sean Garnhart Sound Effects Editor
Richard Hebrank Construction Coordinator
Paul Romero Bartender
Sam Hoffman Executive Producer, Unit Production Manager
Erich Stratmann Music Editor
Jen Jacob Dave Fangirl
Andrew D. Schwartz Still Photographer
Guy East Executive Producer
Ludovic Littee "A" Camera Operator
J. Alex Finch Second Second Assistant Director
Eric Burton Singer Songwriter 2
Cate Montana Supervising ADR Editor
Terry Lewis Troublegum Crew Member - Benson
Andrew Sellon Christian Father
Steven Weisberg Location Manager
Marco Assante Marco
Lauren Selig Co-Producer
Andrew Francis Digital Intermediate Colorist
Alexis Wiscomb Post Production Supervisor
Yaron Orbach Director of Photography
James Baker Boom Operator
Tom Ryan Foley Editor, ADR Recordist, Foley Recordist
Rob Harlow Key Grip
Anne Fleischman Art Direction
Ann McGowan Ballet Teacher
Stacey Maltin Young Girl
Andrew Marcus Editor
Rebecca Breckel Script Supervisor
Patrick Cicero Dialogue Editor
Sharman Macdonald Diner Costumer
Yuval Levy Visual Effects Supervisor
Mariela Comitini First Assistant Director
Tommy Allen Property Master
Sama Fernands Concert Attendee (uncredited)