My mom had LPs of many of the crooners: Sinatra, Martin, SDJr, Williams, etc. As a younger person, I found them not unpleasant but mostly boring. As an adult, and closet musician, I can now appreciate the talent, if not the style of music.
Don't remember the program, maybe Carson, but I saw Mel Torme several years back. Rather than crooning, he did a jazz/blues tune in the scat style. He was amazingly good! Another, still going I think, is Tony Bennett.
Still, I can't help but think of the Perry Como skits they used to do on SNL... And the Sinatra skits by Joe Piscapo, mostly about Sinatra punching out every one in sight...
Have Funds, Will Retire
...not doing anything of true substance...