Nobody has made a more indelible impression on late night television in America than the late, great Johnny Carson. After hosting nearly 5,000 episodes of NBC's The Tonight Show with Johnny Carson over three decades, there are many great stories to be told. For many years, Mr. Barrett was Mr. Carson's publicist and worked side by side on a daily basis with the King of Late Night. On the 28th anniversary of Carson's final Tonight Show epidode, we get a special look at the man who was the most profitable entertainer on the peacock network.