Question: Which Cesar Award for best supporting actor winner starred in a movie that was in competition for the Palme d'Or at the 2008 Cannes Film Festival?
Context: The 63rd Cannes Film Festival was held from 12 to 23 May 2010, in Cannes, France.  The Cannes Film Festival, hailed as being one of the most recognized and prestigious film festivals worldwide, was founded in 1946.  It consists of having films screened in and out of competition during the festival; films screened in competition compete for the Palme d'Or award.  The award in 2010 was won by "Uncle Boonmee Who Can Recall His Past Lives", a Thai film directed by Apichatpong Weerasethakul.  This was determined by the festival's jury members who reviewed films screened in competition.  American film director Tim Burton was the president of the jury for the international competition, and other members of the jury for that competition included actors, screenwriters and composers, such as Kate Beckinsale, Emmanuel Carrère, Benicio del Toro, and Alexandre Desplat.  Other categories for films screened in competition that have their own separate juries for other awards are for Short Films and the Un Certain Regard category. Mark Lee Ping-bing (李屏賓; born August 8, 1954) is a Taiwanese cinematographer, photographer and author with over 70 films and 21 international awards to his credit including 2 Glory Of The Country Awards from the Government Information Office of Taiwan and the president of Taiwan's Light Of The Cinema Award.  Lee began his film career in 1977 and in 1985 he started his prolific collaboration with Taiwanese filmmaker Hou Hsiao-hsien.  Known best for his use of natural lighting utilizing real film and graceful camera movement, Lee received the Grand Technical Prize at the Cannes Film Festival in 2000 for "In the Mood for Love".  A member of the Academy of Motion Picture Arts and Sciences, Lee was honored with nominations by the American Society of Cinematographers for its 2014 First Annual Spotlight Award for Best Cinematography for his work on the 2012 film "Renoir" and by the French Academy of Cinema Arts for a Cesar Award for Best Cinematography in 2014 also for the film "Renoir". Service (Tagalog: Serbis) is a 2008 Filipino independent drama film directed by Brillante Mendoza and stars Gina Pareño as the matriarch of the Pineda family who owns a porn cinema in Angeles City, Pampanga.  The film competed for the Palme d'Or in the main competition at the 2008 Cannes Film Festival.  It is also the first Filipino film to compete at the main competition in Cannes, since Lino Brocka's "Bayan Ko: Kapit sa Patalim" in 1984. The Prisoner is a short fiction film directed by Mahmoud Shoolizadeh, and written by Sharon Y. Cobb in 2013, based on a short story that was written by Mahmoud Shoolizadeh.  It has participated in several major international film festivals, including the Montreal World Film Festival, and East Lansing Film Festival.  Although the movie is based in Florida, it was totally shot in Coastal Georgia.  It won "Best Short Film Award" and "Best Supporting Actor Award" at Hollywood CineRocKom International Film Festival, and won "Honorable Mention Jury Award" at Indie Fest USA International Film Festival.  It also became a nominee for "Best Director" at Hollywood CineRocKom International film festival as well as "Best Lead Actor" and "Best Supporting Actor" at Red Dirt International Film Festival The film has been discussed in local Newspapers and Magazines. Jean-Paul Roussillon (5 March 1931 – 31 July 2009) was a French actor.  He appeared in 87 films and television shows between 1954 and 2008.  He starred in the film "Playing 'In the Company of Men'", which was screened in the Un Certain Regard section at the 2003 Cannes Film Festival.  He won the César Award for Best Supporting Actor for his role in "A Christmas Tale". Henrik Plau is a Norwegian actor and voice over-artist born in Oslo, Norway.  He trained at Nancy Mannes Acting Studio, True Acting Institute as well as Hartvig Nissen School of Performing Arts where he studied acting and fine arts.  His first short film, "Lost Picture Found", was nominated for Best Short at the Grimstad Short film Festival and screened for the Short Film Palme d'Or at the 2008 Cannes Film Festival.  In 2009 he was cast for a recurring role in the award-winning television series Hotel Cæsar.  In 2014 he got to the last round of auditions for one of the lead roles in directed by J.J. Abrams Love You More is a short drama directed by Sam Taylor-Wood, written by Patrick Marber and produced by Anthony Minghella, which was screened in Main Competition for the Palme d'Or at the 2008 Cannes Film Festival.  The film includes two songs by Buzzcocks and features a cameo appearance by the band's lead singer Pete Shelley as a customer at a record store. A Christmas Tale (French: Un conte de Noël ) is a 2008 French comedy-drama film by Arnaud Desplechin, starring Catherine Deneuve, Jean-Paul Roussillon, Mathieu Amalric, Anne Consigny, Melvil Poupaud, Emmanuelle Devos and Chiara Mastroianni.  It tells the story of a family with strained relationships which gathers at the parents' home for Christmas, only to learn that their mother has leukemia.  It was in competition for the Palme d'Or at the 2008 Cannes Film Festival. Michel Franco (born 1979) is a Mexican film director and producer.  His film "After Lucia" won the Prize Un Certain Regard at the 2012 Cannes Film Festival.  His 2015 film "Chronic" was selected to compete for the Palme d'Or at the 2015 Cannes Film Festival.  At Cannes, Franco won the award for Best Screenplay.  His 2017 film "April's Daughter" has been selected to compete in the Un Certain Regard section at the 2017 Cannes Film Festival. Two Lovers is a 2008 American romantic drama film, taking its inspiration from Fyodor Dostoyevsky's short story "White Nights", which had already been turned into a film 7 times, first by Luchino Visconti: "Le Notti Bianche" (1957).  The movie is directed by James Gray and stars Joaquin Phoenix, Gwyneth Paltrow, and Vinessa Shaw.  It is set in the largely Russian Jewish neighborhood Brighton Beach in New York City, as was Gray's first movie "Little Odessa".  "Two Lovers" premiered in competition at the 2008 Cannes Film Festival in May.  The movie is Gray's third to enter the competition at this festival.  It was released on February 13, 2009.
Answer: Jean-Paul Roussillon