Jack Paar took a vacation at the end of May 1958 and 
Johnny Carson filled in, hosting 
The Tonight Show for the very first time. It was a historical moment that at the time was dismissed. 'With Carson navigating, it was wholesome, intelligent and mostly dull,' wrote 
Variety. 'The experience of his helmship will never go down as memorable either for a Carson appearance or for an edition of the show.