Not much jazz on Letterman, although Stan Getz was on (playing a Kenny Barron number), and various people have sat in with the band (Gary Burton, McCoy Tyner). On Carson, Paul Schaefer (on organ) played Oliver Nelson's arrangement of "Taste of Honey" with the Tonight show band (the arrangement on Lloyd Mayer's United Artist album) - Schaefer refered to Nelson as "the great Oliver Nelson," something like that.