When Jay Leno left The Tonight Show the first time, Conan O'Brien became the host but when Conan failed Jay Leno resumed hosting duties and when he left the second time, jimmy fallon took over as host.
Conan O'Brien began hosting The Tonight Show on June 1st 2009 but only lasted until January 22nd 2010.
Johnny Carson hosted The Tonight Show from October 1st 1962 through May 22nd 1992.
Jack Paar hosted The Tonight Show from 1957 to 1962
Immediately after Johnny Carson was Jay Leno.
Johnny Carson
johnny carson
Bob Newhart
He replaced Johnny Carson as host of The Tonight Show in 1992, after having been a regular substitute host for Carson since 1987.Jay Leno hosted The Tonight Show from May 25, 1992 to May 29, 2009, left & returned & hosted from March 1, 2010 until its ending on February 6, 2014 so for 21 years.
Conan hosted The Tonight Show from June 1, 2009 to January 22, 2010
Jack Parr. He was the inventor of the Tonight show, and was it's first host. xxxxxxxxx Actually, it is Jack Paar (2 A's). And, he was not the first host of the Tonight Show. The first host was Steve Allen. xxx Check your facts Jack Paar was the first, and Steve Allen was the second. xxx According to imdb.com, which is not always correct, Steve Allen hosted Tonight! from 1953 to 1957. Jack Paar hosted The Jack Paar Tonight Show from 1957 to 1962. People are often confused by the fact that Allen hosted The Steve Allen Show (a weekly show) from 1956 to 1960, and The New Steve Allen Show (nightly) from 1961-1964. The New Steve Allen Show had a format similar to The Tonight Show, but was a competing show. NBC had him quit Tonight!, a successful show, so he could focus his energy on the weekly show, which competed with Ed Sullivan.
Johnny Carson stepped down as host of The Tonight Show in 1992
David Steinberg
Jack Paar hosted The Tonight Show from 1957 to 1962
Bob Newhart
Bob Newhart
David Letterman never hosted The Tonight Show.
Presuming you mean David Letterman, David never hosted The Tonight Show on NBC. He hosted The Late Show on CBS from 1993 to 2015 & Yes, when he retired, Paul Shaffer & the band left the show as well.
Johnny Carson was host of TV's The Tonight Show for nearly 30 years, from 1962to 1992.
Tonight's The Night xx
He replaced Johnny Carson as host of The Tonight Show in 1992, after having been a regular substitute host for Carson since 1987.Jay Leno hosted The Tonight Show from May 25, 1992 to May 29, 2009, left & returned & hosted from March 1, 2010 until its ending on February 6, 2014 so for 21 years.
The Tonight Show Starring Johnny Carson premiered on October 1, 1962. Johnny Carson hosted the show until he retired in 1992.
Conan hosted The Tonight Show from June 1, 2009 to January 22, 2010
Jack Parr. He was the inventor of the Tonight show, and was it's first host. xxxxxxxxx Actually, it is Jack Paar (2 A's). And, he was not the first host of the Tonight Show. The first host was Steve Allen. xxx Check your facts Jack Paar was the first, and Steve Allen was the second. xxx According to imdb.com, which is not always correct, Steve Allen hosted Tonight! from 1953 to 1957. Jack Paar hosted The Jack Paar Tonight Show from 1957 to 1962. People are often confused by the fact that Allen hosted The Steve Allen Show (a weekly show) from 1956 to 1960, and The New Steve Allen Show (nightly) from 1961-1964. The New Steve Allen Show had a format similar to The Tonight Show, but was a competing show. NBC had him quit Tonight!, a successful show, so he could focus his energy on the weekly show, which competed with Ed Sullivan.