The Tonight Show is an American late-night talk show that has aired on NBC since 1954. It is the longest currently running regularly scheduled entertainment program in the United States, and the third longest-running show on NBC, after Meet the Press and Today.

The Tonight Show has been hosted by Steve Allen (1954–1957), Jack Paar (1957–1962), Johnny Carson (1962–1992), Jay Leno (1992–2009, 2010–present), and Conan O'Brien (2009–2010). Many guest hosts have also appeared, particularly during the Paar and Carson eras.

The longest serving host to date was Carson, who hosted The Tonight Show Starring Johnny Carson for 29 seasons, from the fall of 1962 through the spring of 1992. The current host of the show is Jay Leno, who had previously hosted the show from 1992–2009, and began his current tenure on March 1, 2010.

NBC's Broadway Open House, which began in 1950, first demonstrated the potential for late-night network programming. The format for The Tonight Show can be traced to a nightly 40 minute local New York show hosted by Allen, which premiered in 1953 on what is now WNBC-TV. Beginning in September 1954, it was renamed Tonight! and shown on the full NBC network. Detailed history of hosts can be found here [1].

Demetria Devonne "Demi" Lovato (born August 20, 1992) is an American singer-songwriter, musician, and actress. Her earliest roles included Angela on Barney & Friends, before she became better known for her starring roles in the Camp Rock movies, as Sonny Munroe in the Disney sitcom Sonny with a Chance, and as the star of the 2009 movie Princess Protection Program. She is also involved in philanthropic activities through charity work and various social and environmental causes.

As a solo musical artist, Lovato released her debut album Don't Forget on September 23, 2008. The album debuted at number two on the Billboard 200 selling 89,000 copies in the first week. It has since shipped over 500,000 copies, earning a gold certification in the United States. Lovato released her second album, Here We Go Again, on July 21, 2009. The album debuted at number one on the Billboard 200, selling 108,000 copies in the first week. Her third studio album, Unbroken, was released on September 20, 2011 and peaked at number four on the Billboard 200. She is working on her fourth studio album.

Gwyneth Kate Paltrow ( /ˈɡwɪnɨθ ˈpæltroʊ/; born September 27, 1972) is an American actress and singer. She made her acting debut on stage in 1990 and started appearing in films in 1991. After appearing in several films throughout the decade, Paltrow gained early notice for her work in films such as Seven (1995) and Emma (1996) (in which she played the title role). Following the films Sliding Doors (1998) and A Perfect Murder (1998), Paltrow garnered worldwide recognition through her performance in Shakespeare in Love (1998), for which she won an Academy Award for Best Actress, a Golden Globe Award and two Screen Actors Guild Awards, for Outstanding Lead Actress and as a member of the Outstanding Cast. She also won an Emmy Award for Outstanding Guest Actress in a Comedy Series in 2011 for her role as Holly Holliday on the Fox hit TV show Glee in the episode "The Substitute".

Paltrow has portrayed supporting as well as lead roles in films such as The Talented Mr. Ripley (1999), Shallow Hal (2001), and Proof (2005), for which she earned a Golden Globe nomination as Best Actress in Motion Picture Drama. Since 2008, she has portrayed Pepper Potts in the Marvel Cinematic Universe, starring in Iron Man and its sequel, Iron Man 2 (2010), and also appearing in The Avengers (2012). Paltrow has been the face of Estée Lauder's Pleasures perfume since 2005. She is married to Chris Martin, the lead vocalist of Coldplay. They have two children together, Apple and Moses. She is also the face of American fashion brand Coach, owner of the lifestyle company Goop.com and author of the cookbook My Father's Daughter: Delicious, Easy Recipes Celebrating Family & Togetherness.