Kristen Bell as Beth Harper

Josh Duhamel as Nick Beamon

Anjelica Huston as Celeste

Danny DeVito as Al Russo

Will Arnett as Antonio

Jon Heder as Lance

Dax Shepard as Gale

Alexis Dziena as Joan Harper

Kate Micucci as Stacy

Bobby Moynihan as Puck

Peggy Lipton as Priscilla (Beth's Mom)

Don Johnson as Beth's Dad

Keir O'Donnell as Priest (Father Dino)

Luca Calvani as Umberto

Kristen Schaal as Ilona (Waitress)

Judith Malina as Umberto's Grandma

Lee Pace as Brady Sacks

Natalie Joy Johnson as Secretary

Charlie Sanders as Poker Player #1

Eugene Cordero as Poker Player #2

Eric Zuckerman as Hansom Cab Driver

Pasquale Esposito as Police #1

Francesco De Vito as Cabbie

Ebony Jo-Ann as Customer

Quisha Saunders as Kim

Alexa Havins as Lacy

Ghostface Killah as Guggenheim DJ

Carlo D'Amore as Italian Translator

Geoffrey Cantor as Dr. Moscowitz (Dentist)

Abe Goldfarb as Executive #1

J.T. Arbogast as Executive #2

Shaquille O'Neal as Self

Lawrence Taylor as Self

John Mainieri as Man in Elevator

George Deihl Jr. as News Reporter

Bing Putney as Guggenheim Party Waiter

Jessica Howell as Guggenheim Party Girl #2

Liz Olin as Guggenheim Party Girl #1

Efren Ramirez as Juan (uncredited)

Peter Donald Badalamenti II as Mini Ace Frehley (uncredited)