For over 30 years, U.S. television staple the Tonight Show endured some of the greatest success in TV history. Under the watch of Johnny Carson, the NBC show gained a reputation that is still to be matched in terms of popularity. And while the hugely popular talk show is still going strong with Jimmy Fallon at the helm, there will never be another Johnny Carson. From 1962-1992, the seasoned presenter entertained audiences with his sharp wit, suave persona, and a who’s who of celebrity guests. However, not everything was aired during his run – particularly these 20 scandalous secrets surrounding one of the greatest stints in television history.