Step 1 : Introduction to the question "The Tonight Show"
The Tonight Show is an American late-night talk show currently broadcast from the Rockefeller Center in New York City (and previously from various studios in the Los Angeles region) and airing on NBC since 1954. It 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
