Maxime Godart as Nicolas

Valérie Lemercier as Nicolas's mother

Kad Merad as Nicolas's father

Sandrine Kiberlain as Teacher

François-Xavier Demaison as Mr. Dubon, aka 'le Bouillon'

Michel Duchaussoy as Director

Daniel Prévost as Mr. Moucheboume

Michel Galabru as Minister

Anémone as Miss Navarin

Louise Bourgoin as Florist

Gérard Jugnot as Choir director Clément Mathieu

Vincent Claude as Alceste

Charles Vaillant as Geoffroy

Victor Carles as Clotaire

Benjamin Averty as Eudes

François Damiens as Mr. Blédur

Germain Petit Damico as Rufus

Virgile Tirard as Joachim

Éric Berger as Albert, butler

Marc Faure as Doctor

Françoise Bertin as Playful old lady

Nathalie Cerda as Madame Moucheboume

Cyril Couton as Nicolas's uncle

Virginia Anderson as Secretary

Didier Raymond as Doctor

Christian Taponard as Doctor

Alain Sachs as Doctor

Yves-Robert Viala as Doctor

Elisa Heusch as Marie-Edwige

Damien Ferdel as Agnan

Simon Goscinny du Chatenet as Student in the exam room

Serge Riaboukine as Francis Leborgne

Renaud Rutten as Driving school instructor

Tristan Aquilina as Child of the wasteland (uncredited)

Jean-Michel Lahmi as Gangster

Nicolas Vallée as Cop

Laura Boujenah as Midwife