Late Night is shorthand for several different things:

James Thomas "Jimmy" Fallon, Jr. (born September 19, 1974) is an American actor, comedian, singer, musician and television host. He currently hosts Late Night with Jimmy Fallon, a late-night talk show that airs Monday through Friday on NBC. Prior to that he appeared in several films, and was best known as a cast member on Saturday Night Live from 1998–2004.

James Thomas Fallon, Jr., was born in Brooklyn, New York. Jimmy is the son of Gloria and James Fallon, Sr., who is a Vietnam War veteran. His family later settled in Saugerties, New York, while his father worked at IBM in nearby Kingston, New York. He is of Irish descent. As a child, he and his older sister, Gloria, would reenact the “clean parts” of Saturday Night Live that his parents had taped for him. Fallon was such a fan of Saturday Night Live that he made a weekly event of watching it in his dormitory during college. In his teens, he impressed his parents with different impersonations, the first being of James Cagney. He was also musically inclined, and started playing guitar at age 13. He would go on to mix comedy and music in contests and shows.

Seth Adam Meyers (born December 28, 1973) is an American actor and comedian. He currently serves as head writer for Saturday Night Live and hosts its news parody segment Weekend Update.

Meyers was born in Evanston, Illinois, the son of Hilary Claire (née Olson), a middle school French teacher, and Laurence Meyers, Jr. He attended Manchester High School West in Manchester, New Hampshire. He went on to graduate from Northwestern University in Evanston, Illinois, where he was a member of the fraternity Phi Gamma Delta. Meyers is the older brother of Josh Meyers, who was best known as a cast member of MADtv.

Before SNL, Meyers got his improv comedy start as a member of the Northwestern University improv sketch group Mee-Ow, created by Paul Warshauer and Josh Lazar. He continued his career at ImprovOlympic with the group Preponderate as well as overseas as a cast member of Boom Chicago, an English language improv troupe based in Amsterdam, where his brother was also a cast member.

Meyers appeared with Brendan Fraser and Anita Briem in the 2008 3D film Journey to the Center of the Earth. He also makes a cameo in the 2008 film Nick and Norah's Infinite Playlist as a drunk man who mistakes the main character's Yugo for a taxi. Meyers is currently writing and will star in a movie called Key Party. He also starred in the 2004 comedy See This Movie with John Cho. In July 2008, Meyers directed the web series The Line on Crackle. Meyers has hosted the Webby Awards twice, in 2008 and 2009. In 2009, Meyers hosted the Microsoft Company Meeting at Safeco Field in Seattle, WA. Meyers hosted the 2010 and 2011 ESPY Awards on ESPN. In 2011, Seth Meyers was the keynote speaker at the White House Correspondents Association Dinner on April 30; during his introductory remarks, he made a joke about Osama bin Laden's actions while in hiding, unaware that US intelligence had found bin Laden and he would be dead within hours.

Justin Randall Timberlake (born January 31, 1981) is an American singer, actor, and businessman. He achieved early fame when he appeared as a contestant on Star Search, and went on to star in the Disney Channel television series The New Mickey Mouse Club, where he met future bandmate JC Chasez. Timberlake became famous in the late 1990s as the lead singer and youngest member of the boy band 'N Sync, whose launch was financed by Lou Pearlman.

In 2002, he released his debut solo album, Justified, which sold more than seven million copies worldwide. The album was a commercial success, spawning the hits "Cry Me a River" and "Rock Your Body". Timberlake continued his success with his second solo album, FutureSex/LoveSounds (2006), debuting at number one on the Billboard 200 chart, and produced the US number-one hit singles "SexyBack", "My Love", and "What Goes Around... Comes Around".

Timberlake has won six Grammy Awards and four Emmy Awards. His first two albums made him one of the most commercially successful singers in the world, each selling in excess of 7 million copies. He also has an acting career, having starred in films such as The Social Network, Bad Teacher and Friends with Benefits. His other ventures include record label Tennman Records, fashion label William Rast, and the restaurants Destino and Southern Hospitality.

Miley Ray Cyrus (born Destiny Hope Cyrus; November 23, 1992) is an American actress and pop singer-songwriter. She achieved wide fame for her role as Miley Stewart/Hannah Montana on the Disney Channel sitcom Hannah Montana.

Cyrus recorded music for the soundtracks, Hannah Montana (2006) and Hannah Montana 2/Meet Miley Cyrus (2007), released by Walt Disney Records. With the success of the Hannah Montana franchise she established herself as a teen idol. In 2007, Cyrus signed to Hollywood Records to pursue a solo career. She embarked upon the Best of Both Worlds Tour the same year, in which she performed as both herself and in character as Hannah Montana. The tour was eventually turned into a high-grossing concert film titled Hannah Montana & Miley Cyrus: Best of Both Worlds Concert (2008). In July 2008, Cyrus released her first solo album, Breakout (2008), which was commercially successful.

She began her foray into film by providing the voice of "Penny" in the animated film Bolt (2008). Cyrus earned a nomination for the Golden Globe Award for Best Original Song for her performance of Bolt's theme song, "I Thought I Lost You". She also reprised her role as Miley Stewart/Hannah Montana in Hannah Montana: The Movie (2009). The Hannah Montana: The Movie' soundtrack introduced her to new audiences within country and adult contemporary markets.