Mon meilleur ami

Daniel Auteuil

François Coste

Dany Boon

Bruno Bouley

Julie Gayet

Catherine, François's partner

Julie Durand

Louise Coste, François's daughter

Henri Garcin

Étienne Delamotte, producer

Jacques Mathou

Mr. Bouley, Bruno's father

Marie Pillet

Mrs. Bouley, Bruno's mother

Élisabeth Bourgine

Julia

Jacques Spiesser

Letellier

Audrey Marnay

Marianne, Catherine's companion

Alain Rimoux

Merchant at dinner

Éric Frey

Friend at dinner

Fabienne Chaudat

Madame Lebinet

Jean-François Kopf

Auctioneer

Marc Faure

Friend at dinner

Philippe du Janerand

Luc Lebinet, school friend

Jean-Pierre Foucault

Self

Étienne Draber

Speaker

Éric Naggar

Near-sighted man at the conference

Anne Le Ny

Selector of the casting of "Réponse à tout"