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Sandra Annette Bullock ( /ˈbʊlək/; born July 26, 1964) is an American actress and producer who rose to fame in the 1990s after roles in successful films such as Demolition Man, Speed, The Net, A Time to Kill, and While You Were Sleeping. In the new millennium she appeared in such films as Miss Congeniality, The Lake House, and Crash, the third of which received critical acclaim. In 2007, she was ranked as the 14th richest female celebrity with an estimated fortune of US$85 million. In 2009, Bullock starred in two of the more financially successful films of her career, The Proposal and The Blind Side. Bullock was awarded a Golden Globe Award for Best Actress, a Screen Actors Guild Award for Outstanding Performance by a Female Actor in a Leading Role, and the Academy Award for Best Actress, for her role as Leigh Anne Tuohy in The Blind Side. She is listed in the 2012 edition of the Guinness Book Of World Records as the highest-paid actress, with $56 million.

Sandra Annette Bullock was born in Arlington, Virginia, a suburb of Washington, D.C. Her father, John W. Bullock (born 1925), was a United States Army employee and part-time voice coach from Birmingham, Alabama, and her mother, Helga D. Meyer (1942–2000), was a German opera singer and voice teacher. Bullock's maternal grandfather was a rocket scientist from Nuremberg, Germany. John Bullock, then in charge of the Army's Military Postal Service in Europe, was stationed in Nuremberg when he met his wife. They married in Germany, soon moving to Arlington, where John Bullock worked with the Army Materiel Command, before becoming a contractor for The Pentagon.

George Timothy Clooney (born May 6, 1961) is an American actor, film director, producer, and screenwriter. For his work as an actor, he has received three Golden Globe Awards and an Academy Award. Clooney is also noted for his political activism, and has served as one of the United Nations Messengers of Peace since January 31, 2008.

Though he made his acting debut on television in 1978, Clooney gained fame and recognition by portraying Dr. Douglas "Doug" Ross on the long-running medical drama ER from 1994 to 1999. While working on ER, he started attracting a variety of leading roles in films including Batman & Robin (1997) and Out of Sight (1998), in which he first teamed with long-term collaborator Steven Soderbergh. 1999 saw the release of Three Kings, a well-received war satire set during the Gulf War featuring Clooney in another lead role. In 2001, Clooney's fame widened with the release of his biggest commercial success, Ocean's Eleven, the first of a profitable film trilogy, a remake of the film from 1960 with the members of The Rat Pack with Frank Sinatra as Danny Ocean. He made his directorial debut a year later with the 2002 biographical thriller Confessions of a Dangerous Mind, and has since directed Good Night, and Good Luck (2005), Leatherheads (2008), and The Ides of March (2011). He won an Academy Award for Best Supporting Actor for his work in the Middle East thriller Syriana (2005) and subsequently fetched Best Actor nominations for such films as Michael Clayton (2007), Up in the Air (2009) and The Descendants (2011).

Mark Elliot Zuckerberg (born May 14, 1984) is an American computer programmer and Internet entrepreneur. He is best known as one of four co-founders of the social networking site Facebook, of which he is chairman and chief executive.

Zuckerberg was born and raised in a Jewish household in New York state. While still in middle school in his early teens, he took up writing software programs as a hobby, beginning with BASIC, with help from his father. His father then hired a tutor to help his son develop his programming skills further. Zuckerberg's enjoyment in writing programs led him to developing computer games, writing a music player, and setting up a primitive home network he called "ZuckNet." His private tutor calls him a "prodigy." In high school he excelled in classic literature and science, while becoming proficient in four other languages. He was also captain of the school's fencing team.

He later enrolled in Harvard, majoring in computer science and sociology. In his sophomore year he wrote a program called Facemash as a "fun" project, letting students on the college's network vote on other students' photo attractiveness. It was shut down within days, but would become a template for his writing Facebook, a program he launched from his dormitory room. With the help of friends, including roommate Dustin Moskovitz, Facebook went national on other campuses, and they moved to Palo Alto, California. By 2010, the site had an estimated 500 million users worldwide. Zuckerberg and Facebook have since been involved in various legal disputes initiated by others who have claimed a share of the company's profits due to their help in setting it up. Zuckerberg is the largest individual shareholder with 28.4 percent of the common stock and controls 56.9 percent of the voting power. As of 2012^[update], his personal wealth was estimated at more than $19.1 billion, making him one of the world's youngest billionaires. Zuckerberg is one of the 30 richest people on Earth.