Late Night Final

The Tonight Show is an American late-night talk show that has been broadcast on NBC since 1954. The program has been hosted by seven comedians: Steve Allen (1954–1957), Ernie Kovacs (1956–1957), Jack Paar (1957–1962), Johnny Carson (1962–1992), Jay Leno (1992–2009 and 2010–2014), Conan O'Brien (2009–2010) and Jimmy Fallon (since 2014). Besides the main hosts, a number of regular "guest hosts" have been used, notably Ernie Kovacs, who hosted his own version of Tonight two nights per week during 1956–1957, and a number of guest hosts used by Carson, who curtailed his own hosting duties back to three nights per week by the 1980s. Among Carson's regular guest hosts were Joey Bishop, McLean Stevenson, David Letterman, David Brenner, Garry Shandling and Joan Rivers, with his final regular guest host being his eventual successor Jay Leno. The practice of hiring guest hosts has been mostly discontinued by Leno and his successors, who prefer airing reruns to showcasing potential rivals. The Tonight Show is the world's longest-running talk show and the longest-running regularly scheduled entertainment program in the United States. It is the third-longest-running show on NBC, after the news-and-talk shows Today and Meet the Press. The current incarnation is taped from Studio 6B at NBC Studios in Rockefeller Center in New York, the same studio used during the later Jack Paar era and the first 10 years of Carson. During its initial run under Steve Allen, it originated from the Hudson Theatre on Broadway. From 1973 to 2009, and from 2010 to 2014 the show was taped at one of three different studios at NBC's Burbank, California Studios. During Conan O'Brien's brief tenure, the show was taped at an opulently reworked studio on Stage 1 of Universal Studios Hollywood. Over the course of almost 70 years, The Tonight Show has undergone only minor title changes. It aired under the name Tonight for several of its early years, as well as Tonight Starring Jack Paar and The Jack Paar Show due to the runaway popularity of its host, eventually settling permanently on The Tonight Show after Carson began his tenure in 1962, albeit with the host's name always included in the title. Beginning with Carson's debut episode, network programmers, advertisers, and the show's announcers would refer to the show by including the name of the host: The Tonight Show Starring Johnny Carson, The Tonight Show with Jay Leno, The Tonight Show with Conan O'Brien and currently, The Tonight Show Starring Jimmy Fallon. In the 1950s and 1960s, TV listings publications such as TV Guide often listed the show as simply Jack Parr or Johnny Carson. In 1957, the show briefly tried a more news-style format (during which time its title was adjusted to Tonight! America After Dark). It has otherwise adhered to the talk show format introduced by Allen and honed further by Paar. Carson is the longest-serving host to date, although he is not the host with the most episodes. The Tonight Show Starring Johnny C