Late Night is shorthand for several different things:

Fred Armisen (born December 4, 1966) is a U.S. actor, comedian and musician best known for his work as a cast member on Saturday Night Live, and portraying off-color foreign characters in various comedy films such as EuroTrip, Anchorman and Cop Out. With Carrie Brownstein, he is the cocreator and costar of the IFC sketch series Portlandia.

Armisen was born in Hattiesburg, Mississippi, and moved to Manhattan, New York City as a baby. He was raised in Valley Stream, New York, on Long Island. His mother, Hildegardt, a school-teacher, is Venezuelan, and his father, who worked for I.B.M., is of German and Japanese descent. He attended the School of Visual Arts (NYC) before dropping out to begin a career as a rock drummer. He has mentioned watching the bands The Clash and Devo perform on television, and wanting to be a performer since he was a child.

In 1984, Armisen played drums in a local band along with his high school friends in Valley Stream, New York, but the group ended soon after. Armisen began his career in 1988 when he moved from New York to Chicago to play drums for the punk rock band Trenchmouth. In the 1990s, he played background drums with the Blue Man Group in Chicago.

Amy Meredith Poehler  /ˈpoʊlər/ (born September 16, 1971) is an American actress, comedienne, producer and writer. She was a cast member on the NBC television entertainment show Saturday Night Live from 2001 to 2008. In 2004, she had a minor role in the film Mean Girls with Tina Fey, with whom she worked again in Baby Mama in 2008. She is currently the lead of NBC's comedy Parks and Recreation. She has been nominated twice for both the Primetime Emmy Award for Outstanding Supporting Actress in a Comedy Series for her performance on Saturday Night Live, and for the Outstanding Lead Actress in a Comedy Series for her performance in Parks & Recreation. For the latter series she also received a 2012 Golden Globe Award nomination.

Poehler was born in Newton, Massachusetts, and grew up in Burlington, Massachusetts. She is the daughter of Eileen Frances (née Milmore) and William Grinstead Poehler, both teachers. She is a distant cousin of author Stephen King and U.S. senator Scott Brown, through shared New England ancestry. Poehler was raised Catholic.

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.

Kanye Omari West ( /ˈkɑːnjeɪ/; born June 8, 1977) is an American musician, film director and fashion designer. West first rose to fame as a producer for Roc-A-Fella Records, where he eventually achieved recognition for his work on Jay-Z's album The Blueprint, as well as hit singles for musical artists including Alicia Keys, Ludacris, and Janet Jackson. His style of production originally used pitched-up vocal samples from soul songs incorporated with his own drums and instruments. However, subsequent productions saw him broadening his musical palette and expressing influences encompassing '70s R&B, baroque pop, trip hop, arena rock, folk, alternative, electronica, synthpop, and classical music.

West released his debut album The College Dropout in 2004, his second album Late Registration in 2005, his third album Graduation in 2007, his fourth album 808s & Heartbreak in 2008, and his fifth album My Beautiful Dark Twisted Fantasy in 2010. West released a collaborative album, Watch the Throne with Jay-Z in 2011, which is the duo's first collaborative album. His five solo albums, all of which have gone platinum, have received numerous awards and critical acclaim. As of 2012, West has won a total of eighteen Grammy Awards, making him one of the most awarded artists of all-time. All albums have been very commercially successful, with My Beautiful Dark Twisted Fantasy becoming his fourth consecutive No. 1 album in the U.S. upon release. West has had 5 songs exceed 3 million in digital sales as of July 2011, with "Gold Digger" selling 3,086,000, "Stronger" selling 4,402,000, "Heartless" selling 3,742,000, "E.T." selling over 4,000,000 and "Love Lockdown" selling over 3,000,000 placing him third in overall digital sales of the past decade. He has sold over 30 million digital songs in the United States making him one of the best-selling digital artists of all-time.