Ruby Sparks

Paul Dano

Calvin

Zoe Kazan

Ruby

Chris Messina

Harry

Annette Bening

Gertrude

Antonio Banderas

Mort

Alia Shawkat

Mabel

Deborah Ann Woll

Lila

Steve Coogan

Langdon Tharp

Elliott Gould

Dr. Rosenthal

Aasif Mandvi

Cyrus Modi

Toni Trucks

Susie

Eleanor Seigler

Mandi

John F. Beach

Adam

Jane Anne Thomas

Saskia

Wallace Langham

Warren

Mary Jo Deschanel

Female Professor

Emma Jacobs

Party Goer at Langdon's

Rightor Doyle

Party Goer 1 - Hammer