LaDonna Adrian Gaines (December 31, 1948 – May 17, 2012), known by the stage name Donna Summer, was an American singer and songwriter who gained prominence during the disco era of the late 1970s. She had a mezzo-soprano vocal range, and was a five-time Grammy Award winner. Summer was the first artist to have three consecutive double albums reach number one on the United States Billboard chart, and she also charted four number-one singles in the United States within a 13-month period.

Born into a devoutly Christian lower middle class African American family in Boston, Massachusetts, Summer first became involved with singing through church choir groups before joining a number of bands influenced by the Motown Sound. Influenced by the counterculture of the 1960s, she became the front singer of a psychedelic rock band named Crow and moved to New York City. Joining a touring version of the musical Hair, she spent several years living in West Germany, where she married Helmut Sommer, whose surname she adopted as her stage name.

David Michael Letterman (born April 12, 1947) is an American television host and comedian. He hosts the late night television talk show, Late Show with David Letterman, broadcast on CBS. Letterman has been a fixture on late night television since the 1982 debut of Late Night with David Letterman on NBC. Letterman recently surpassed friend and mentor Johnny Carson for having the longest late-night hosting career in the United States of America.

Letterman is also a television and film producer. His company Worldwide Pants produces his show as well as its network follow-up The Late Late Show with Craig Ferguson. Worldwide Pants has also produced several prime-time comedies, the most successful of which was Everybody Loves Raymond, currently in syndication.

In 1996, David Letterman was ranked #45 on TV Guide's 50 Greatest TV Stars of All Time.

Letterman was born in Indianapolis, Indiana. His father, Harry Joseph Letterman (April 1915 – February 1973), was a florist of British descent; his mother Dorothy Letterman (née Hofert, now Dorothy Mengering), a Presbyterian church secretary of German descent, is an occasional figure on the show, usually at holidays and birthdays.

Richard St John Harris (1 October 1930 – 25 October 2002) was an Irish actor, singer-songwriter, theatrical producer, film director and writer.

He appeared on stage and in many films, and is perhaps best known for his roles as King Arthur in Camelot (1967), as Oliver Cromwell in Cromwell (1970) and as Albus Dumbledore in the first two films in the Harry Potter series, his final works. He played a British aristocrat and prisoner in A Man Called Horse (1970), Emperor Marcus Aurelius in Gladiator (2000), Saint John in Apocalypse Revelation (2002), gunfighter English Bob in Clint Eastwood's Western film Unforgiven (1992), and Dom Frollo in the 1997 TV movie version of The Hunchback of Notre Dame. Harris had a top ten hit in the UK and the US with his 1968 recording of Jimmy Webb's song "MacArthur Park".

Harris, the fifth of nine children, was born in Limerick city, Ireland (then known as the Irish Free State) into a middle-class, staunchly Roman Catholic family. His parents were Ivan John Harris (b. 1896, son of Richard Harris, b. 1854, son of James Harris of St. Michael's, Limerick) and Mildred Josephine Harty Harris (b. 1898, daughter of James Harty, St. John's, Limerick, who owned a flour mill.) Harris' siblings include Patrick Ivan (born 1929), Noel William Michael (born 1932), Diarmid (Dermot, born 1939), and William George Harris (born 1942). He was schooled by the Jesuits at Crescent College. A talented rugby player, he was on several Munster Junior and Senior Cup teams for Crescent, and played for Garryowen. Harris' athletic career was cut short when he caught tuberculosis in his teens. He remained an ardent fan of the Munster Rugby and Young Munster teams then until his death, and attending many of its matches, and there are numerous stories of japes at rugby matches with the actors and fellow rugby fans Peter O'Toole and Richard Burton.