Step 1 : Introduction to the question "Who was the first person to host "The Tonight Show"?"
...Steve Allen was the pioneering first host of "The Tonight Show," launching the iconic late-night program in 1954. Allen, a multitalented comedian, musician, and television personality, set the standard for the format of late-night talk shows that would follow. His version of the show combined a mix of comedy sketches, celebrity interviews, and live music. In all, "The Tonight Show" has been hosted by a total of six comedians: Steve Allen (1954–1957), Jack Paar (1957–1962), Johnny Carson (1962–1992), Jay Leno (1992–2009 and 2010–2014), Conan O'Brien (2009–2010), and Jimmy Fallon (2014–present).