Christoph Maria Schlingensief (24 October 1960, Oberhausen – 21 August 2010, Berlin) was a German theatre director, performance artist and filmmaker.
 Starting as an independent underground filmmaker, Schlingensief later staged productions for theatres and festivals, often accompanied by public controversies.
 In the final years before his death, he staged Parsifal at the Bayreuth Festival and worked at several opera houses, establishing himself as a "Regietheater" artist.
 He posthumously won the Golden Lion for Germany in 2011 at the Venice Biennale for the best national pavilion, which was turned into an installative replica of the stage design for his autobiographical play "A Church of Fear VS. the Alien Within", alluding to his cancer illness.
documenta X was the tenth edition of documenta, a quinquennial contemporary art exhibition.
 It was held between 21 June and 28 September 1997 in Kassel, Germany.
 The artistic director was Catherine David.
 This was the first time a women was appointed as artistic director of documenta.
 It is also the first time the website of the exhibition was conceive as an artistic part of it.
Catherine David choose the swiss curator Simon Lamunière to conceived, design and curate the project .
 Part of documenta X was the experimental performance space and digital platform "Hybrid WorkSpace," curated by Klaus Biesenbach, Nancy Spector, and Hans-Ulrich Obrist.
 The space was designed by architect Eicke Becker and featured important performances, among them the famous Christoph Schlingensief performance titled "Mein Filz, mein Fett, mein Hase, 48 Stunden Überleben für Deutschland" during which several artists were arrested.
 Florian Schneider used "Hybrid WorkSpace" as an opportunity to initiate the No one is illegal network.
Lau Wan-kit (, born on July 19, 1966) "aka Jeffrey Lau", is a comic artist from Hong Kong.
Opera Village Africa (French: Village-Opéra Afrique , German: Operndorf Afrika ) is an arts education project located in Ouagadougou, the capital city of Burkina Faso.
 It was initiated by the German film and theatre director, actor, and artist, Christoph Schlingensief.
 It is operated by Festspielhaus Afrika as a non-proft GmbH (limited company) based in Germany.
 The first phase was completed in November 2011.
Just Another Pandora's Box, also known as Once Upon a Chinese Classic, is a 2010 Hong Kong parody film directed by Jeffrey Lau, starring Ronald Cheng, Gigi Leung, Betty Sun, Eric Tsang, Huang Bo, Guo Degang, Gillian Chung, and Patrick Tam.
 It is a spiritual successor to Lau's two-part 1995 film "A Chinese Odyssey".
 Athena Chu, who starred in "A Chinese Odyssey", makes a guest appearance in "Just Another Pandora's Box".
Top Bet ( Literal translation: "Queen of Gambling") is a 1991 Hong Kong comedy film directed by Jeffrey Lau and Corey Yuen and starring Carol Cheng, Anita Mui and Ng Man-tat.
 It is a sequel to Lau and Yuen's 1990 film, "All for the Winner".
Foreigners out!
 Schlingensiefs Container (Ausländer raus!
 Schlingensiefs Container), alternately named ""Wien-Aktion"", ""Please Love Austria—First European Coalition Week"", or ""Foreigners Out—Artists against Human Rights"", is an art project and television show from 2000 that took place within the scope of the annual Wiener Festwochen.
 It was conceptually designed by Christoph Schlingensief and directed by Paul Poet, and was styled as a mockery of popular TV program format "Big Brother".
 It was critically aimed both at certain forms of television entertainment and at a latent xenophobia still thriving in the whole world.
Oskar Roehler (born January 21, 1959) is a German film director, screenwriter and journalist.
 He was born in Starnberg as the son of writer Gisela Elsner and the writer Klaus Roehler.
 Since the mid-1980s he has been working as a screenwriter, for, among others, Niklaus Schilling, Christoph Schlingensief and Mark Schlichter.
 Since the early 1990s he has also been working as a film director.
 For his film No Place to Go he won the Deutscher Filmpreis.
 His 2010 film "" was nominated for the Golden Bear at the 60th Berlin International Film Festival.
Jeffrey Lau Chun-Wai () is a Hong Kong film director, screenwriter, actor and producer.
 He was born on August 2, 1952.
 Lau is famous for writing and directing "mo lei tau" (Cantonese nonsense) comedies.
 His comedies include "A Chinese Odyssey" (with Stephen Chow) and "Chinese Odyssey 2002", the latter which was voted Best 2002 Film by the Hong Kong Film Critics Society.
Days of Tomorrow (天長地久) is a 1993 Hong Kong romantic drama film written and directed by Jeffrey Lau, produced by and starring Andy Lau.

Question: What do Christoph Schlingensief and Jeffrey Lau have in common?
Answer: director