Question: Who is the director of the movie "The Magic Christian" in which Peter Sellers was acted?

Context paragraphs:
The Fiendish Plot of Dr. Fu Manchu: The Fiendish Plot of Dr. Fu Manchu is a 1980 comedy film, primarily notable as the final film of Peter Sellers, David Tomlinson and John Le Mesurier.  Pre-production began with Richard Quine as director.  By the time the film entered production, Piers Haggard had replaced him.  Peter Sellers handled the re-shoots himself.  Based on characters created by Sax Rohmer, the film stars Sellers in the dual role of Fu Manchu, a stereotypical Chinese evil genius, and English country gentleman detective Nayland Smith.  Released only two weeks after Sellers death, the film was a commercial and critical failure.  It was also the final screen appearance for Tomlinson, who retired from acting shortly before its release.

The Life and Death of Peter Sellers: The Life and Death of Peter Sellers is a 2004 British-American television film about the life of English comedian Peter Sellers, based on Roger Lewis's book of the same name.  It was directed by Stephen Hopkins and stars Geoffrey Rush as Sellers, Miriam Margolyes as his mother Peg Sellers, Emily Watson as his first wife Anne Howe, Charlize Theron as his second wife Britt Ekland, John Lithgow as Blake Edwards, Stephen Fry as Maurice Woodruff and Stanley Tucci as Stanley Kubrick.

Ringo Starr filmography: In addition to the Beatles' films "A Hard Day's Night" (1964), "Help! " (1965), "Magical Mystery Tour" (1967), "Yellow Submarine" (1968) and "Let It Be" (1970), Ringo Starr also acted in films such as "Candy" (1968), "The Magic Christian" (1969, alongside Peter Sellers), "Blindman" (1971), "Son of Dracula" (1974) and "Caveman" (1981).

Mr. Topaze: Mr. Topaze (also known as I Like Money) is Peter Sellers' directorial debut in 1961.  Starring Sellers, Nadia Gray and Leo McKern, as well as Herbert Lom.  His son Michael Sellers plays in the film in the role of Gaston.  The film is based on the eponymous play by Marcel Pagnol.

Magic Christian Music: Magic Christian Music is the debut album by the British rock band Badfinger, released in early 1970 on Apple Records.  Three tracks from the LP are featured in the film "The Magic Christian", which also gives the album its title.  However, "Magic Christian Music" is not an official soundtrack album for the film.

Trail of the Pink Panther: Trail of the Pink Panther is a 1982 British comedy film starring Peter Sellers for the sixth and final time.  It was the seventh film in "The Pink Panther" series, the first film in the series following Sellers' death and also the last in which he appeared as Inspector Clouseau.  Sellers died before production began.  His performance consists only of deleted scenes from previous films.

Hoffman (film): Hoffman is a 1970 British film directed by Alvin Rakoff and starring Peter Sellers, Sinéad Cusack, Ruth Dunning and Jeremy Bulloch.  It is the tale of an older man (Peter Sellers) who blackmails an attractive young woman (Sinéad Cusack) into spending a week with him in his flat in London.  His hope is that she will forget her crooked fiancé and fall in love with him instead.

Ghost in the Noonday Sun: Ghost in the Noonday Sun is a 1973 British comedy film directed by Peter Medak starring Peter Sellers, Anthony Franciosa and Spike Milligan.  The film suffered a notoriously difficult production due to Sellers's erratic behavior and was never released in cinemas.  Medak described the film as "the biggest disaster of my life”.

The Magic Christian (film): The Magic Christian is a 1969 British satirical black comedy film directed by Joseph McGrath and starring Peter Sellers and Ringo Starr, with appearances by John Cleese, Graham Chapman, Raquel Welch, Spike Milligan, Christopher Lee, Richard Attenborough and Roman Polanski.  It was loosely adapted from the 1959 comic novel of the same name by American author Terry Southern, who co-wrote the screenplay adaptation with McGrath.

The Magic Christian (novel): The Magic Christian is a 1959 comic novel by American author Terry Southern (1924–1995) about an odd billionaire who spends most of his time playing elaborate practical jokes on people.  It is known for bringing Southern to the attention of filmmaker Stanley Kubrick, who had received a copy as a gift from Peter Sellers, and subsequently hired him as co-writer for "Dr. Strangelove" (1964) when Kubrick decided to make that film a black comedy/satire, rather than a straightforward thriller.  In 1969, "The Magic Christian" was made into a film starring Peter Sellers and Ringo Starr; the story was much altered and relocated from New York City to London.

Supporting paragraphs: Ringo Starr filmography The Magic Christian (film)
Answer: Joseph McGrath