Cast & crew
That Most Important Thing: Love (1975)
Directed by Andrzej Żuławski Written by Andrzej Żuławski, Christopher Frank
Cast
| Roger Blin | Servais' Father |
| Nicoletta Machiavelli | Luce Lapade |
| Klaus Kinski | Karl-Heinz Zimmer |
| Gabrielle Doulcet | Madame Mazelli |
| Michel Robin | Raymond Lapade |
| Guy Mairesse | Laurent Messala |
| Katia Tchenko | Myriam, prostitute |
| Paul Bisciglia | Assistant Director |
| Sylvain LĂ©vignac | First Man in the Brewery |
| Olga Valéry | Woman with the Dildo |
| GĂ©rard Zimmermann | LĂ©onard |
| Sin May Zao | Vietnamese Girl |
| Claudine Beccarie | Girl at the Orgy (uncredited) |
| Frédérique Barral | Girl in the brewery (uncredited) |
| Michel Berreur | Second man in the brewery (uncredited) |
| Fabio Testi | Servais Mont |
| Romy Schneider | Nadine Chevalier |
| Jacques Dutronc | Jacques Chevalier |
| Claude Dauphin | Mazelli |
| Robert Dadiès | Doctor in the Hospital / Actor in the Theatre |
| Georges-Fréderic Dehlen | Actor in the Theatre |
| Jack Jourdain | Victor |
| Claude Legros | Manuel Rosenthal |
| Jacques Boudet | Robert Beninge |
| Kira Potonie | Messala's wife |
| Michel Such | Electrician |
| Jacques Van Dooren | Verdurin |
| Nadia Vasil | Female Director |
| Serge Godenaire | Youth in the orgy (uncredited) |
| GĂ©rard Moisan | Mazelli henchman (uncredited) |
| Manu Pluton | Man at the gym (uncredited) |
| Guy Delorme | Mazelli henchman (uncredited) |
| Jerry Di Giacomo | English transvestite |
| Eric Vasberg | Third man in the brewery (uncredited) |
Crew
| Andrzej Żuławski | Director |
| Christopher Frank | Novel |
| LĂ©o L. Fuchs | Executive Producer |
| Albina du Boisrouvray | Producer |
| Georges Delerue | Original Music Composer |
| Ricardo Aronovich | Director of Photography |
| Christiane Lack | Editor |
| Claude Carliez | Stunt Coordinator |
| Jean-Pierre Kohut-Svelko | Production Design |
| Catherine Leterrier | Costume Design |
| Didier Lavergne | Makeup Artist |
| Jean-Max Guérin | Hairstylist |
| Massimo De Rossi | Makeup Artist |
| Andrzej Żuławski | Screenplay |
| Georges Casati | Production Manager |
| Élisabeth Rappeneau | Script Supervisor |
| Christopher Frank | Screenplay |
| Laurent Ferrier | First Assistant Director |
| Jacques GĂ©rardot | Sound Recordist |
| Maurice Laumain | Sound Editor |
| Jean NĂ©ny | Sound Mixer |