E S T E B A N
...haven't you guys seen the infomercials?
Very subjective question and hard to answer, really.
I'll say that one guitar player who measures up against any I've heard is Eddie Hazel of P-Funk. That dude was so good it's scary. He never got enough love.
If we're talking bass, I'd have to say Jaco. Maybe Vic Wooten or Stanley Clarke.