The Tonight Show is an American late-night talk show that has aired on NBC since 1954. Again recorded in New York City, it is the longest currently running, regularly scheduled entertainment program in the United States and the third-longest-running show on NBC after Meet the Press and Today. It is the longest-running talk show in television history, predating Ireland's The Late Late Show by eight years. The show has undergone some minor title changes, having aired as Tonight for several of its early years, before settling on The Tonight Show in 1962. Aside from minor format changes, and a brief move to a more news-style format in 1957 before reverting that same year, it has remained a talk show throughout its run.
The Tonight Show has been hosted by Steve Allen (1954–57), Jack Paar (1957–62), Johnny Carson (1962–92), Jay Leno (1992–2009, 2010–14), Conan O'Brien (2009–10), and Jimmy Fallon (2014–present). Several guest hosts have also appeared, particularly during the Paar and Carson eras. The current host is former Late Night host and Saturday Night Live cast member Jimmy Fallon.
The longest-serving host to date is Johnny Carson, who hosted The Tonight Show Starring Johnny Carson for 30 seasons from October 1962 through to May 1992, though Leno has hosted the most episodes over the course of his two tenures and guest-hosting for Carson. The most recent host of the show is Jimmy Fallon, who has hosted the show since February 17, 2014.