Another tip: If you want some straight-up jazz that's highly listenable, look for a McCoy Tyner (piano) with Stanley Clarke (bass) CD. I had the privilege of seeing them together live at (the world-famous) Yoshi's Jazz Club in Oakland. Awesome show.

Also, if you're in the mood for a more modern sound, give Charlie Hunter a try. He plays an 8-string bass and it sounds like he has 8 hands, too!