Documentary films constitute a broad category of nonfictional motion pictures intended to document some aspect of reality, primarily for the purposes of instruction or maintaining a historical record. A 'documentary film' was originally shot on film stock — the only medium available — but now includes video and digital productions that can be either direct-to-video, made as a television program or released for screening in cinemas. "Documentary" has been described as a "filmmaking practice, a cinematic tradition, and mode of audience reception" that is continually evolving and is without clear boundaries.

In popular myth, the word 'documentary' was coined by Scottish documentarian John Grierson in his review of Robert Flaherty's film Moana (1926), published in the New York Sun on 8 February 1926, written by "The Moviegoer" (a pen name for Grierson).

Grierson's principles of documentary were that cinema's potential for observing life could be exploited in a new art form; that the "original" actor and "original" scene are better guides than their fiction counterparts to interpreting the modern world; and that materials "thus taken from the raw" can be more real than the acted article. In this regard, Grierson's definition of documentary as "creative treatment of actuality" has gained some acceptance, with this position at variance with Soviet film-maker Dziga Vertov's provocation to present "life as it is" (that is, life filmed surreptitiously) and "life caught unawares" (life provoked or surprised by the camera).

Albert Einstein ( /ˈælbərt ˈaɪnstaɪn/; German: [ˈalbɐt ˈaɪnʃtaɪn] ( listen); 14 March 1879 – 18 April 1955) was a German theoretical physicist who developed the theory of general relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics. While best known for his mass–energy equivalence formula E = mc² (which has been dubbed "the world's most famous equation"), he received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". The latter was pivotal in establishing quantum theory within physics.

Near the beginning of his career, Einstein thought that Newtonian mechanics was no longer enough to reconcile the laws of classical mechanics with the laws of the electromagnetic field. This led to the development of his special theory of relativity. He realized, however, that the principle of relativity could also be extended to gravitational fields, and with his subsequent theory of gravitation in 1916, he published a paper on the general theory of relativity. He continued to deal with problems of statistical mechanics and quantum theory, which led to his explanations of particle theory and the motion of molecules. He also investigated the thermal properties of light which laid the foundation of the photon theory of light. In 1917, Einstein applied the general theory of relativity to model the structure of the universe as a whole.

Joseph Vissarionovich Stalin (Russian: Иосиф Виссарионович Сталин; born Iosif Vissarionovich Dzhugashvili, Russian: Иосиф Виссарионович Джугашвили; 18 December 1878 – 5 March 1953) was the Premier of the Soviet Union from 6 May 1941 to 5 March 1953. He was among the Bolshevik revolutionaries who brought about the October Revolution in Russia in 1917 and later held the position of General Secretary of the Communist Party of the Soviet Union's Central Committee from 1922 until his death in 1953. While the office of the General Secretary was officially elective and not initially regarded as the top position in the Soviet state, Stalin managed to use it to consolidate more and more power in his hands after the death of Vladimir Lenin in 1924 and gradually put down all opposition groups within the Communist Party. This included Leon Trotsky, a socialist theorist and the principal critic of Stalin among the early Soviet leaders, who was exiled from the Soviet Union in 1929. Whereas Trotsky was an exponent of permanent revolution, it was Stalin's concept of socialism in one country that became the primary focus of Soviet politics.

Admiral Sir Henry Morgan (Harri Morgan in Welsh; ca. 1635 – 25 August 1688) was an Admiral of the Royal Navy, a privateer, and a pirate who made a name for himself during activities in the Caribbean, primarily raiding Spanish settlements. He was one of the most notorious and successful privateers of all time, and one of the most ruthless who worked in the Spanish Main.

Henry Morgan was the eldest son of Robert Morgan, a squire Farmer of Llanrumney in north Monmouthshire. (Not Llanrumney near Cardiff). He also had a sister Catherine. An entry in the Bristol Apprentice Books showing "Servants to Foreign Plantations" 9 February 1655, included "Henry Morgan of Abergavenny, Labourer, Bound to Timothy Tounsend of Bristol, Cutler, for three years, to serve in Barbados on the like Condiciouns."

Henry's father Robert Morgan (born c.1615) was a descendant from a cadet branch of the ‘Tredegar Morgans’ and had two brothers, Thomas and Edward. Major-General Sir Thomas Morgan (1st Baronet 1604-79) served in the Commonwealth forces during English civil war from 1642-9, was Governor of Gloucester 1645, fought in Flanders, wounded, and in 1661 retired to his estate in Kynnersley, Herts. He was married on 10 September 1632, and had nine sons, of whom the eldest, Sir John Morgan followed in his father's profession. Thomas was recalled in 1665 to become Governor of Jersey, and died in St. Helier in April 1679. Colonel Edward Morgan (c. 1616- after 1665) was a Royalist during English Civil War 1642-9, Captain General of the Kings forces in South Wales, escaped to the continent, and married Anna Petronilla the daughter of Baron von Pöllnitz, Westphalia, (governor of Lippstadt, a city 20 miles east of Dortmund Germany). They had six children, two sons, and four daughters (including Anna Petronilla and Johanna). He was appointed Lt-Gov. Jamaica 1664-65.

Reggie Yates (born 31 May 1983 in Archway, London) is a British actor, television presenter and radio DJ of Ghanaian descent. He went to Central Foundation Boys' School.

Yates made his first TV appearance in Desmond's at the age of 8. He also appeared in Disney Club as Robbie. In 1998, Reggie appeared as a guest presenter on Diggit on CITV also under the name Robbie. In 2002, he played Carl Fenton in the popular children's series Grange Hill. From 2002 to 2004, he presented the Sunday morning programme Smile, and then went on to present Top of the Pops with former Smile co-host Fearne Cotton before the final episode broadcast on BBC Two on 30 July 2006. He also created and starred in the series The Crust and presented Dance Factory and his own radio show on BBC Radio 1,

He appeared on Stars in Fast Cars on 10 March 2006 and won his group to get into the final, beating Elton Welsby and Ben Fogle in the last round.

He presented Mighty Truck of Stuff and "Only in America" with Fearne Cotton on CBBC as well as his own show on BBC Radio 1 with Fearne Cotton. They presented a breakfast show on Saturday and Sunday mornings. They played from 7:00 a.m.–10:00 a.m. They then went on to present the Radio 1 Chart Show starting on 14 October 2007 until Sunday 20 September 2009. Fearne left following her promotion to weekday mornings on Radio 1 from 10:00 a.m.–12:45 p.m. leaving Reggie to present on his own. They took over from JK & Joel, who have now left the station. In addition to the chart show, Yates also presents a request show on Saturday afternoons, known as The Radio 1 Request Show where listeners can send in a text or phone in to request a song.