Question: Errol Sitahal played Dr. Patel in a film directed by who?
Context: William Oliver "Billy" Campbell (born July 7, 1959) is an American film and television actor.  In television, he is best known for his roles as Rick Sammler on "Once and Again", as Det. Joey Indelli on "Crime Story", as Jordan Collier on "The 4400", and as Dr. Jon Fielding on the "Tales of the City" miniseries.  He is also known for his recurring role as Luke Fuller in "Dynasty" which was his first prominent role.  His most notable films include "The Rocketeer", "Bram Stoker's Dracula" and "Enough."  He portrayed Darren Richmond on the AMC television series "The Killing", and played Dr. Alan Farragut in the SyFy series "Helix". Errol Sitahal is an Indo-Trinidadian  actor, residing in Canada, who has acted in several Hollywood films.  In 1995, he played a character named Ram, the Indian manservant, in the film, "A Little Princess".  The same year he also appeared with Chris Farley and David Spade in a scene from the movie "Tommy Boy", where he played the third ""Yes"" executive.  In 2004, he played the stern Dr. Patel, father to Kumar (Kal Penn) and Kumar's older brother Saikat (Shaun Majumder), in "Harold & Kumar Go to White Castle". Crystal (born May 6, 1994) is a female capuchin monkey and animal actor, acquired and trained by Birds & Animals Unlimited, Hollywood's largest supplier of animals.  Her acting career began as a baby monkey in the 1997 film "George of the Jungle".  More recently, she portrayed the irritating monkey Dexter in the "Night at the Museum" franchise, and a drug-dealing monkey in "The Hangover Part II".  In 2012, she played Dr. Rizzo on the sitcom "Animal Practice". A Little Princess is a 1995 American family drama film directed by Alfonso Cuarón and starring Eleanor Bron, Liam Cunningham (in a dual role), and introducing Liesel Matthews as Sara Crewe with supporting roles done by Vanessa Lee Chester, Rusty Schwimmer, Arthur Malet, and Errol Sitahal.  Set during World War I, it focuses on a young girl who is relegated to a life of servitude in a New York City boarding school by the headmistress after receiving news that her father was killed in combat.  Loosely based upon the novel "A Little Princess" by Frances Hodgson Burnett, this adaptation was heavily influenced by the 1939 cinematic version and takes creative liberties with the original story. "Now or Never" is the twenty-fourth episode and the season finale of the fifth season of the American television medical drama, "Grey's Anatomy" and the show's 102nd episode overall.  Written by Debora Cahn and directed by Rob Corn, the episode was originally broadcast on the American Broadcasting Company (ABC) in the United States on May 14, 2009.  The initial airing was viewed by 17.12 million viewers and garnered a 6.2/17 Nielsen rating/share in the 18–49 demographic.  The episode marked the last appearance of series regular T.R. Knight who played Dr. George O'Malley who got into an accident during the episode and dies in the season 6 premier. Wendy Hughes (29 July 19528 March 2014) was an Australian actress known for her work in theatre, film and television.  Hughes was an award-winning actress.  Her career spanned more than forty years and established her reputation as one of Australia's finest and most prolific actors.  Her biggest role was in "Lonely Hearts," played in 1982 (this film was the beginning of a long collaboration with director Paul Cox).  In her later career she acted in "Happy New Year" along with stars Peter Falk and Charles Durning.  In 1993 she played Dr. Carol Blythe, M. E. in "."  In the late 1990s, she starred in "State Coroner" and "Paradise Road." Richard E. Grant (born Richard Grant Esterhuysen; 5 May 1957) is a Swazi-English actor, screenwriter, director and perfumier.  He came to public attention in 1987 for playing Withnail in the film "Withnail and I", and achieved recognition as John Seward in the 1992 film "Bram Stoker's Dracula".  More recently he played Dr. Zander Rice in the 2017 superhero film "Logan".  He is also known for his role as Izembaro in the sixth season of the HBO series "Game of Thrones". Peter Facinelli (born November 26, 1973) is an American actor and producer.  He starred as Donovan "Van" Ray on the Fox series "Fastlane" from 2002 to 2003.  He played Dr. Carlisle Cullen in the film adaptations of the "Twilight" novel series, and is also known for his role as Mike Dexter in the 1998 film "Can't Hardly Wait".  Facinelli was a regular on the Showtime comedy-drama series "Nurse Jackie", portraying the role of Dr. Fitch "Coop" Cooper.  He portrayed Maxwell Lord on the first season of the TV series "Supergirl". Lyndam Gregory (c. 1955 – 15 July 2014) was an Indian-born British theatre, television, soap opera, and voiceover actor.  His best known credits include his portrayal of Sammy Patel on "Coronation Street" in 1983, his recurring role as Guppy Sharma on "EastEnders" from 1995 to 1996, and Ashkok in "The Archers".  Gregory also played Dr. Simon Field on ITV television series, "Surgical Spirit", for 23 episodes from 1989 to 1992. Harold & Kumar Go to White Castle (alternatively known as Harold & Kumar Get the Munchies) is a 2004 American stoner comedy film and the first installment of the "Harold & Kumar" series.  The film was written by Jon Hurwitz and Hayden Schlossberg, and directed by Danny Leiner.
Answer: Danny Leiner