Johnny Carson, the king of late-night television, hosted his
final episode of "The Tonight Show" on this day in history,
May 22, 1992, after a 30-year run.

Carson conducted about 22,000 interviews during his tenure
and was seen by more people on more occasions than anyone
else in U.S. television history. 

The long-running "The Tonight Show" was the first, and for
decades the most-watched, network talk program on TV, 
according to the Television Academy Foundation.