We all mourn Johnny Carson. Anyone who could be consistently entertaining for so long had to have been an amazing person. And he always wore good suits.
Carson represented the end of an era. Like Ed Sullivan earlier, Carson was watched by everybody. Even when I was a kid, my parents would sometimes let me sit on their bed and watch.
There's no common media culture anymore. The market is segmented and varied. The multiple consumer choices (500 channels and nothing to watch), plus the internet, represent a new birth of freedom. Although I believe that's true, I salute and remember Johnny as the iconic, great entertainer of an era that has passed.