Question: Dark Side of the Moon is a French mockumentary featuring a guest appearance by  an American retired politician and businessman who served as the 21st Secretary of Defense under who?

 The basic premise for the film is the theory that the television footage from the Apollo 11 Moon landing was faked and recorded in a studio by the CIA with help from director Stanley Kubrick.  It features some surprising guest appearances, most notably by Donald Rumsfeld, Dr. Henry Kissinger, Alexander Haig, Vernon Walters, Buzz Aldrin and Stanley Kubrick's widow, Christiane Kubrick. Dark Side of the Moon is a French mockumentary by director William Karel which originally aired on Arte in 2002 with the title Opération Lune. <SEP> The Dark Side is the third studio album by power metal band DarkSun, which is the English version of "El Lado Oscuro", the album was released in September 2007.  "The Dark Side" and was released in September 2007 through FC Metal Recordings.  The critics were as good as the Spanish version, like "the album can be defined with one word: brilliant!" .  The band collaborated on Rage's album "Speak of the Dead", with a Spanish version of the song "Full Moon" entitled "La Luna Reine," which appeared as a bonus track.  Just after the release of "The Dark Side" drummer Rafael Yugueros left DarkSun to form part of power metal band WarCry replacing former drummer Alberto Ardines.  Yugueros had already worked with WarCry on their 1997's demo "Demon 97".  The band re-recruited Daniel Cabal who worked on what would become the band's new album "Libera Me".  On the summer of 2008 DarkSun announced that Cabalwas leaving the band, all these occurred in a professional and friendly way from both parties.  On the same announcement the band presented new drummer Jose Ojeda, who had performed drums on Spanish bands like Rivendel Lords, Killian, among others. <SEP> Wish You Were Here is the ninth studio album by English rock band Pink Floyd.  It was released on 12 September 1975 by Harvest Records in the United Kingdom and a day later by Columbia Records in the United States.  Inspired by material the group composed while performing around Europe, "Wish You Were Here" was recorded during numerous recording sessions at Abbey Road Studios in London, England.  Two of the album's four songs criticise the music business, another expresses alienation and the multi-part track "Shine On You Crazy Diamond" is a tribute to Syd Barrett.  Barrett's mental breakdown had forced him to leave the group seven years earlier, prior to the release of the group's second studio album "A Saucerful of Secrets" (on which he only appeared on three tracks).  It was lead writer Roger Waters' idea to split "Shine On You Crazy Diamond" into two parts that would bookend the album around three new compositions and to introduce a concept linking them all.  The band had used a linking concept for their previous album, "The Dark Side of the Moon", to great success.  As with "The Dark Side of the Moon", the band used studio effects and synthesizers and brought in guest singers to supply vocals on some tracks of the album.  These singers were Roy Harper, who provided the lead vocals on "Have a Cigar", and the Blackberries, who added backing vocals to "Shine On You Crazy Diamond". <SEP>  Rumsfeld served as the 13th Secretary of Defense from 1975 to 1977 under President Gerald Ford, and as the 21st Secretary of Defense from 2001 to 2006 under President George W. Bush.  He is both the youngest and the second oldest person to have served as Secretary of Defense. Donald Henry "Don" Rumsfeld (born July 9, 1932) is an American retired politician and businessman.  Additionally, Rumsfeld was a three-term U.S. Congressman from Illinois (1963–1969), Director of the Office of Economic Opportunity (1969–1970), Counsellor to the President (1969–1973), the United States Permanent Representative to NATO (1973–1974), and White House Chief of Staff (1974–1975).