I'm old enough to remember when his version of Cold, Cold Heart was on the hit parade and that sort of turned me off him. And I got tired of I Left My Heart very fast. Then I didn't like it when he curled his hair. But after I heard him sing Lost in the Stars with the Count Basie band I realized how shallow I'd been. Saw him at Disney Hall shortly after it opened. A great concert.
Heard an interview with him aimed at a general audience where he mainly talked about jazz bands and jazz musicians. He was very knowledgeable.
Columbia did a nice box set which included some of his work with Bill Evans.