Late Night with David Letterman is a nightly hour-long comedy talk show on NBC

NBC

The National Broadcasting Company is an American commercial broadcasting television network and former radio network headquartered in the GE Building in New York City's Rockefeller Center with additional major offices near Los Angeles and in Chicago...

 that was created and hosted by David Letterman

David Letterman

David Michael Letterman 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...

. It premiered in 1982 as the first incarnation of the Late Night franchise

Late Night (NBC)

Late Night is an American late-night talk and variety show airing on NBC since 1982. Late Night has been hosted by David Letterman , Conan O'Brien , and Jimmy Fallon...

 and went off the air in 1993, after Letterman left NBC and moved to Late Show

Late Show with David Letterman

Late Show with David Letterman is a U.S. late-night talk show hosted by David Letterman on CBS. The show debuted on August 30, 1993, and is produced by Letterman's production company, Worldwide Pants Incorporated. The show's music director and band-leader of the house band, the CBS Orchestra, is...

 on CBS

CBS

CBS Broadcasting Inc. is a major US commercial broadcasting television network, which started as a radio network. The name is derived from the initials of the network's former name, Columbia Broadcasting System. The network is sometimes referred to as the "Eye Network" in reference to the shape of...

. Late Night with Conan O'Brien

Late Night with Conan O'Brien

Late Night with Conan O'Brien is an American late-night talk show hosted by Conan O'Brien that aired 2,725 episodes on NBC between 1993 and 2009. The show featured varied comedic material, celebrity interviews, and musical and comedy performances. Late Night aired weeknights at 12:37 am...

 then filled the time slot. As of March 2, 2009, the slot has been filled by Late Night with Jimmy Fallon

Late Night with Jimmy Fallon

Late Night with Jimmy Fallon is an American late-night talk show hosted by Jimmy Fallon on NBC. The show premiered on March 2, 2009, as the third incarnation of the Late Night franchise originated by David Letterman....

.
After his morning show

The David Letterman Show

The David Letterman Show was a live morning NBC talk show hosted by David Letterman from June 23 to October 24, 1980. The show originally ran for 90 minutes, then 60 minutes from August 4 onward.-Background:...

 on NBC got cancelled in October 1980 after only 18 weeks on the air, David Letterman was still held in sufficient regard by the network brass (especially NBC president Fred Silverman

Fred Silverman

Fred Silverman is an American television executive and producer. He worked as an executive at the CBS, ABC and NBC networks, and was responsible for bringing to television such programs as the series Scooby-Doo , All in the Family , The Waltons , and Charlie's Angels , as well as the...

) that upon hearing the 33-year-old comedian is being courted by a syndication

Television syndication

In broadcasting, syndication is the sale of the right to broadcast radio shows and television shows by multiple radio stations and television stations, without going through a broadcast network, though the process of syndication may conjure up structures like those of a network itself, by its very...

 company, NBC gave him a $20,000 per week deal to sit out a year and guest-host a few times on Johnny Carson

Johnny Carson

John William "Johnny" Carson was an American television host and comedian, known as host of The Tonight Show Starring Johnny Carson for 30 years . Carson received six Emmy Awards including the Governor Award and a 1985 Peabody Award; he was inducted into the Television Academy Hall of Fame in 1987...

's Tonight Show

The Tonight Show Starring Johnny Carson

The Tonight Show Starring Johnny Carson is a talk show hosted by Johnny Carson under the Tonight Show franchise from 1962 to 1992. It originally aired during late-night....

.

On 9 November 1981, NBC and Carson's production company Carson Productions

Carson Productions

Carson Productions is a television production company established by Johnny Carson in 1980 to primarily produce The Tonight Show Starring Johnny Carson from 1980 to 1992 and Late Night with David Letterman from 1982 to 1993....

 announced the creation of Late Night with David Letterman, set to premiere in early 1982 in the 12:30 a.m.