Lonnie Johnson and Charlie Christian would be my two most underappreciated. Christian was the first ever to play single note guitar improvised solos. And Lonnie Johnson was THE MAN in early blues.

Even though Rolling Stone is a rock magazine I can't believe how much they ignored the jazz greats. Django Rheinhart, Joe Pass, Wes Montgomery, Grant Green, Bucky Pizzarelli, Tal Fallow, Johnnie Smith, Jimmy Ponder...I would have thought at least one or two more of those cats would have gotten some props.