Howard Michael "Howie" Mandel (born November 29, 1955) is a Canadian comedian, and television host. He is well known as host of the NBC game show Deal or No Deal, as well as the show's daytime and Canadian-English counterparts. Before his career as a game show host, Mandel was best known for his role as rowdy ER intern Dr. Wayne Fiscus on the NBC medical drama St. Elsewhere. He is also well known for being the creator and star of the children's cartoon Bobby's World. On June 6, 2009, he hosted the 2009 Game Show Awards on GSN. Mandel became a judge on NBC's America's Got Talent, replacing David Hasselhoff, in the fifth season of the reality talent contest. He was a supporting character in the 2000 film Tribulation, from Cloud Ten Pictures.

Howard Allan Stern (born January 12, 1954) is an American radio personality, television host, author, actor and photographer best known for his radio show which was nationally syndicated from 1986 to 2005. He gained wide recognition in the 1990s where he was labeled a "shock jock" for his outspoken and sometimes controversial style. Stern has been exclusive to Sirius XM Radio, a subscription-based satellite radio service, since 2006. The son of a former recording and radio engineer, Stern wished to pursue a career in radio at the age of five. While at Boston University he worked at the campus station WTBU before a brief stint at WNTN in Newton, Massachusetts.

He developed his on-air personality when he landed positions at WRNW in Briarcliff Manor, WCCC in Hartford and WWWW in Detroit. In 1981, he was paired with his current newscaster and co-host Robin Quivers at WWDC in Washington, D.C. Stern then moved to WNBC in New York City in 1982 to host afternoons until his firing in 1985. He re-emerged on WXRK that year, and became one of the most popular radio personalities during his 20-year tenure at the station. Stern's show is the most-fined radio program, after the Federal Communications Commission (FCC) issued fines to station licensees for allegedly indecent material that totaled $2.5 million. Stern has won Billboard's Nationally Syndicated Air Personality of the Year award eight times, and is one of the highest-paid figures in radio.

John William "Johnny" Carson (October 23, 1925 – January 23, 2005) was an American television host and comedian, known for thirty years as host of The Tonight Show Starring Johnny Carson (1962–1992). Carson received six Emmy Awards, the Governor Award, and a 1985 Peabody Award. He was inducted into the Television Academy Hall of Fame in 1987. Johnny Carson was awarded the Presidential Medal of Freedom in 1992 and received a Kennedy Center Honor in 1993.

Although his show was already successful by the end of the 1960s, during the 1970s Carson became an American icon and remained so until his retirement in 1992. He adopted a casual, conversational approach with extensive interaction with guests, an approach pioneered by Arthur Godfrey and previous Tonight Show hosts Steve Allen and Jack Paar. Late night hosts David Letterman, Jay Leno, Conan O'Brien, Craig Ferguson, and Jimmy Fallon have all cited Carson's influence on their late-night talk shows, which resemble his in format and tone.

Carson was born in Corning, Iowa, in the year 1925, to Homer Lloyd "Kit" Carson, a power company manager, and Ruth Hook Carson, who was of Irish descent. He grew up in the nearby towns of Avoca, Clarinda, and Red Oak in southwest Iowa before moving to Norfolk, Nebraska, at the age of eight. At the age of twelve, Carson found a book on magic at a friend's house and immediately purchased a mail-order magician's kit. He debuted as "The Great Carsoni" at fourteen and was paid $3; many other performances at local picnics and country fairs followed.

James Christian "Jimmy" Kimmel (born November 13, 1967) is an American comedian, actor, voice artist and television host. He is the host of Jimmy Kimmel Live!, a late-night talk show that airs on ABC. Prior to that, Kimmel was best known as the co-host of Comedy Central's The Man Show and Win Ben Stein's Money. Kimmel is also a television producer, having produced shows such as Crank Yankers, Sports Show with Norm Macdonald, and The Andy Milonakis Show.

Kimmel was born in the Mill Basin neighborhood of the New York City borough of Brooklyn, the eldest of three children of Joann (née Iacono), a homemaker, and James Kimmel, an IBM executive. He is Roman Catholic and, as a child, served as an altar boy. Kimmel is of German and Irish descent on his father’s side and Italian descent on his mother’s side. His uncle, Frank Potenza, appeared on Jimmy Kimmel Live! as a regular from 2003 until his death in 2011.

The family moved to Las Vegas, Nevada, when he was nine years old. He graduated from Ed W. Clark High School and then attended University of Nevada, Las Vegas for one year before attending Arizona State University for two years without completing a degree.

Craig Ferguson (born 17 May 1962) is a Scottish-American television host, stand-up comedian, writer, actor, director, author, and producer. He is the host of The Late Late Show with Craig Ferguson, an Emmy Award-nominated, Peabody Award-winning late-night talk show that airs on CBS. In addition to hosting that program and performing stand-up comedy, Ferguson has written two books: Between the Bridge and the River, a novel, and American on Purpose, a memoir. He became a citizen of the United States in 2008.

Before his career as a late-night television host, Ferguson was best known in the United States for his role as the office boss, Nigel Wick, on The Drew Carey Show from 1996 to 2003. He also wrote and starred in three films, directing one of them.

Ferguson was born in the Stobhill Hospital in the Springburn district of Glasgow, Scotland to Robert and Janet Ferguson, and raised in nearby Cumbernauld, growing up "chubby and bullied". When he was six months old, he and his family moved from their Springburn apartment to a council house in Cumbernauld. They lived there as Glasgow was re-housing many people following damage to the city from World War II. Ferguson attended Muirfield Primary School and Cumbernauld High School. At age sixteen, Ferguson dropped out of Cumbernauld High School and began an apprenticeship to be an electronics technician at a local factory of American company Burroughs Corporation.