Colin Firth as George Falconer

Julianne Moore as Charley

Nicholas Hoult as Kenny Potter

Matthew Goode as Jim

Jon Kortajarena as Carlos

Paulette Lamori as Alva

Ryan Simpkins as Jennifer Strunk

Ginnifer Goodwin as Mrs. Strunk

Teddy Sears as Mr. Strunk

Paul Butler as Christopher Strunk

Aaron Sanders as Tom Strunk

Aline Weber as Lois

Keri Lynn Pratt as Blonde Secretary

Jenna Gavigan as Other Secretary #1

Alicia Carr as Other Secretary #2

Lee Pace as Grant

Adam Shapiro as Myron

Ridge Canipe as Young Boy

Elisabeth Harnois as Young Woman

Erin Daniels as Bank Teller

Marlene Martinez as Maria

Nicole Steinwedell as Doris

Tricia Munford as Cashier

Jon Hamm as Hank Ackerley (voice) (uncredited)

Melissa Goodwin Shepherd as Student